Nephron 2016;132(suppl1): DOI: /

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1 Nephron 16;132(suppl1): DOI: / Published online: April 19, 16 UK Renal Registry 18th Annual Report: Chapter 8 Haemoglobin, Ferritin and Erythropoietin amongst UK Adult Dialysis Patients in 14: National and -specific Analyses Julie Gilg a, Anirudh Rao a, Andrew J Williams b a UK Renal Registry, Bristol, UK; b Morriston Hospital, Swansea, UK Key Words Anaemia. Chronic kidney disease. Dialysis. End stage renal disease. Epidemiology. Erythropoietin. Erythropoietin stimulating agent. European Best Practice Guidelines. Ferritin. Haemodialysis. Haemoglobin. NICE. Peritoneal dialysis. Renal Association Summary In the UK in 14:. The median haemoglobin (Hb) of patients at the time of starting dialysis was g/l with % of patients having a Hb 5 g/l.. The median Hb in patients starting haemodialysis (HD) was 97 g/l (IQR ) and in patients starting peritoneal dialysis (PD) was 108 g/l (IQR 117).. At start of dialysis, 54% of patients presenting early had Hb 5 g/l whilst only 33% of patients presenting late had Hb 5 g/l.. The median Hb of prevalent patients on HD was 111 g/l with an IQR of g/l.. The median Hb of prevalent patients on PD was 112 g/l with an IQR of g/l.. 81% of HD patients and 83% of PD patients had Hb 5 g/l.. 58% of HD patients and 56% of PD patients had Hb 5 and 41 g/l.. The median ferritin in HD patients was 432 mg/l (IQR ) and 95% of HD patients had a ferritin 5 mg/l.. The median ferritin in PD patients was 292 mg/l (IQR ) with 88% of PD patients having a ferritin 5 mg/l. In England, Wales and Northern Ireland in 14:. The median erythropoietin stimulating agent (ESA) dose was higher for HD than PD patients (7,333 vs. 4,148 IU/week). Fax karger@karger.com # 16 The UK Renal Registry Published by S. Karger AG, Basel /16/ $39./0 This article is licensed under the Creative Commons Attribution- NonCommercial-NoDerivatives 4.0 International License (CC BY- NC-ND) ( Usage and distribution for commercial purposes as well as any distribution of modified material requires written permission. Julie Gilg UK Renal Registry, Southmead Hospital, Southmead Road, Bristol, BS10 5NB, UK renalregistry@renalregistry.nhs.uk

2 Introduction Anaemia is a common feature of Chronic Kidney Disease (CKD) and when untreated is strongly associated with poor outcomes, resulting in increased hospitalisations and mortality. This chapter describes analyses of the UK Renal Registry (UKRR) data relating to the management of anaemia in dialysis patients during 14. The diagnosis and management of anaemia in chronic kidney disease and the standards to be achieved have been detailed in the Kidney Disease Improving Global Outcomes (KDIGO), Kidney Disease Outcomes Quality Initiative (KDOQI), European Best Practice Guidelines (EBPG) and UK Renal Association guidelines [1 4]. The health economics of anaemia therapy using ESAs has also been subject to a National Institute of Clinical Excellence (NICE) systematic review which concluded that treating to a target haemoglobin (Hb) g/l is cost effective in HD patients [5]. The NICE guidance was updated in June 15 [6] but this will not have influenced the data reported in this chapter from 14. This chapter reports on the analyses of data items collected by the UKRR largely in the context of the 5th edition of the UK Renal Association s Anaemia in CKD guidelines and recommendations which was published at the end of 10 [4]. Table 8.1 lists the audit measures from these guidelines along with reasons for the exclusion of some of the measures. The Proactive IV iron Therapy in haemodialysis patients (PIVOTAL) trial is a randomised control trial that has been recruiting in the UK since November 13 in renal centres (target 2,000 participants) to test the efficacy and safety of high-dose IV iron supplementation in incident haemodialysis patients. This is unlikely to have had a large impact on the centre level data presented in this chapter [7]. Methods Most of the analyses in this chapter use the incident or prevalent renal replacement therapy (RRT) cohorts for 14. Table 8.1. Summary of recommended Renal Association audit measures relevant to anaemia management RA audit measure Included in UKRR annual report? Reason for exclusion 1. Proportion of CKD patients with egfr, ml/min by 4 variable MDRD method with an annual Hb level 2. Proportion of patients starting an ESA without prior measurement of serum ferritin and/or TSAT 3. Proportion of patients on renal replacement therapy with Hb level,10 who are not prescribed an ESA 4. Each renal unit should audit the type, route and frequency of administration and weekly dose of ESA prescribed No No Yes UKRR reports the completeness of these data items Data not available for the period covered by this report UKRR does not know when all patients start ESA treatment. UKRR does not collect TSAT data 5. The proportion of CKD stage 4 5 patients with Hb g/dl No Data not available for the period covered by this report 6. The proportion of patients treated with an ESA with Hb.12 g/dl Yes 7. Each renal unit should monitor ESA dose adjustments No UKRR does not collect this data 8. Proportion of patients with serum ferritin levels, ng/ml at start of treatment with ESA 9. Proportion of pre-dialysis and PD patients receiving iron therapy; type: oral vs. parenteral No No UKRR does not know when all patients start ESA treatment Data not available for the period covered by this report/poor data completeness 10. Proportion of HD patients receiving IV iron No Poor data completeness 11. Prevalence of resistance to ESA among renal replacement Yes therapy patients 12. Proportion of HD patients who received a blood transfusion within the past year No Data held at NHS Blood and Transplant 1 Nephron 16;132(suppl1): Gilg/Rao/Williams

3 Some analyses use data from earlier years. Haemoglobin levels are given in g/l as the majority of UK laboratories have now switched to reporting using these units rather than g/dl. The UKRR extracted quarterly data electronically from renal centres in England, Wales and Northern Ireland (E,W&NI) taking the latest available result from each quarter. Data from Scotland were provided by the Scottish Renal Registry (SRR). For Q2 and Q4 the data provided were from May and November respectively due to the SRR s bi-annual census. For Q1 and Q3 the earliest available results in the quarter were provided. Data was provided for patients on treatment on 1st February, 1st May, 1st August and 1st November respectively for the four quarters. Therefore, for people who started treatment in the later part of each quarter, data was not available for the quarter of start. So, in order to improve completeness for the analysis of incident patients (see below), the cohort used for Scotland was patients starting treatment between 2nd November 13 and 1st November 14 inclusive and the definition of quarters was adjusted (e.g. for patients starting treatment from 2nd August 14 up to 1st November 14 the Hb data from Q4 was used). For the analyses of Hb for incident patients, those patients commencing RRT on PD or HD were included whilst those receiving a pre-emptive transplant were excluded. Hb measurements from after starting dialysis but still within the same quarter of the year were used. Therefore, depending on when in the quarter a patient started RRT the Hb data could be from zero to days later. Patients who died within the first days on treatment were excluded. Results are also shown with the cohort subdivided into early and late presenters (date first seen by a nephrologist, or more days and less than days before starting dialysis respectively). For these analyses only centres with at least 75% completeness of presentation time data were included. For the analyses of prevalent dialysis patients those patients receiving dialysis on 31st December 14 were included if they had been on the same modality of dialysis in the same centre for at least three months. In order to improve completeness, the last available measurement for each patient from the last two quarters was used for Hb and from the last three quarters for ferritin. The completeness of data items were analysed at both centre and country level. As in previous years, all patients were included in analyses but centres with less than % completeness were excluded from the caterpillar and funnel plots showing centre level results. s providing relevant data from less than 10 patients were also excluded from the plots. The number preceding the centre name in the caterpillar plots is the percentage of patients who have data missing. Summary statistics including minimum, maximum, interquartile ranges (IQR), averages (mean and median) and standard deviations were calculated. The median values and the IQRs are shown using caterpillar plots. The percentages achieving standards were also calculated and these are displayed using caterpillar plots with the percentages meeting the targets and 95% confidence intervals (CIs) shown. Funnel plots show the distribution of the percentages meeting the targets and also whether any of the centres were significantly different from the average. Longitudinal analyses were performed to show overall changes in achievement of standards over time. Erythropoietin data from the last quarter of 14 were used to define which patients were receiving ESAs. Scotland was excluded from this analysis as data about ESAs was not included in its return. Each individual was defined as being on ESA if a drug type and/or a dose was present in the data. s reporting fewer than % of HD patients or fewer than 45% of PD patients being treated with ESAs were considered to have incomplete data and were excluded from further analysis. It is recognised that these exclusion criteria are relatively arbitrary but they are in part based upon the frequency distribution graph of centres ESA use as it appears in the data. The percentage of patients on ESAs was calculated from these data and incomplete data returns risk seriously impacting on any conclusions drawn. For analyses of ESA dose, values are presented as weekly erythropoietin dose. Doses of less than 1 IU/week (likely to be darbepoietin) were harmonised with erythropoietin data by multiplying by 0. No adjustments were made with respect to route of administration. Patients who were not receiving ESAs were not included in analyses of dose (rather than being included with dose = 0). Until three years ago, UKRR annual reports only used the dose from the final quarter of the year. Now, starting with the cohort of patients receiving ESAs in the final quarter and having a dose value present for that quarter, any further dose values available from the earlier three quarters of the year were used (provided the patient was on the same treatment and receiving the same drug in those quarters). The average (mean) of the available values was then used in analyses rather than the dose in the final quarter. The ESA data were collected electronically from renal IT systems but in contrast to laboratory linked variables the ESA data required manual data entry. The reliability depended upon the data source, whether the entry was linked to the prescription or whether the prescriptions were provided by the primary care physician. In the latter case, doses may not be as reliably updated as the link between data entry and prescription is indirect. Results Anaemia management in incident dialysis patients Haemoglobin in incident dialysis patients The Hb at the time of starting RRT gives the only indication of concordance with current anaemia management recommendations in the pre-dialysis (CKD 5 not yet on dialysis) group. The percentage of data returned and outcome Hb are listed in table 8.2. Results are not shown for London Guys as no Hb data was available. The median Hb of patients at the time of starting dialysis in the UK was g/l. The median Hb when starting dialysis is shown in figure 8.1. The percentage of patients having a Hb 5 g/l was again % after falling over the previous years from the 55% seen for the 09 cohort. The percentage starting with a Hb 5 g/l by centre is given in figure 8.2. The variation between centres in the proportion of patients starting dialysis with Hb 5 g/l remained high (27 89%). Using the centres that had provided the date of first presentation with good completeness, the Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

4 Table 8.2. Haemoglobin data for incident patients starting RRT on haemodialysis or peritoneal dialysis during 14, both overall and by presentation time All incident dialysis patients Early presenters (5 days) Late presenters (, days) % data return N with data Hb g/l 5 g/l Hb g/l 5 g/l Hb g/l 5 g/l England B Heart B QEH Basldn Bradfd Brightn Bristol Camb Carlis Carsh 225 Chelms Colchr Covnt Derby Donc Dorset Dudley Exeter Glouc Hull Ipswi Kent L Barts L Guys 0 0 L Kings L Rfree L St.G L West Leeds Leic Liv Ain Liv Roy M RI Middlbr Newc Norwch Nottm Oxford Plymth Ports Prestn Redng Salford Sheff Shrew Stevng Sthend Stoke Sund Truro Wirral Wolve York Nephron 16;132(suppl1): Gilg/Rao/Williams

5 Table 8.2. Continued All incident dialysis patients Early presenters (5 days) Late presenters (, days) % data return N with data Hb g/l 5 g/l Hb g/l 5 g/l Hb g/l 5 g/l N Ireland Antrim Belfast Newry Ulster West NI Scotland Abrdn Airdrie D & Gall Dundee Edinb Glasgw Inverns Klmarnk Krkcldy Wales Bangor Cardff Clwyd Swanse Wrexm England 93 4, N Ireland Scotland Wales UK 94 5, Blank cells: centres excluded from analyses due to poor data completeness or low patient numbers Presentation time data has not been collected from the Scottish Renal Registry For Scottish centres the cohort is patients starting RRT on dialysis between 2/11/13 and 1/11/14 inclusive 1 1 N = 5,873 Upper quartile Hb Lower quartile Haemoglobin g/l Chelms 0 Carlis 0 Newry 0 D&Gall 9 Bangor 2 Exeter 0 Glouc 2 Shrew 0 Bristol 0 Derby 41 L West 3 Krkcldy 1 Edinb 0 Truro 2 Brightn 0 Redng 5 Stoke 0 Cardff 5 Inverns 2 Dundee 5 Ulster 29 Hull 16 Camb 0 Ports 0 Plymth 15 Wirral 2 Newc 0 L Rfree 0 Carsh 1 Dorset 3 Dudley 0 Liv Roy 3 B QEH 1 Glasgw 18 York 2 Wrexm 2 Covnt 0 Swanse 1 Stevng 1 L Barts 2 Donc 6 Airdrie 6 Abrdn 5 Belfast 1 Nottm 2 Salford 0 M RI 48 Colchr 1 L St.G Clwyd 10 Wolve 5 Sund 1 Prestn 1 Bradfd 0 Middlbr 0 Leic 0 B Heart 0 Oxford 6 Klmarnk 21 Ipswi 1 Norwch 4 Leeds 2 Basldn 3 Antrim 7 England 3 N Ireland 3 Scotland 2 Wales 6 UK Fig haemoglobin for incident dialysis patients at start of dialysis treatment in 14 Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

6 Percentage of incident patients N = 5,873 Upper 95% Cl % with Hb > g/l Lower 95% Cl 10 2 Exeter 2 Chelms 0 Bristol 0 D&Gall 0 Carlis 9 Bangor 0 Newry 5 Inverns 2 Dundee 0 Glouc 5 Ulster 41 L West 0 Truro 2 Shrew 0 Derby 0 Cardff 29 Hull 2 Brightn 5 Stoke 3 Krkcldy 0 Redng 0 Plymth 0 Liv Roy 0 L Rfree 0 Ports 15 Wirral 1 Dorset 16 Camb 3 Dudley 2 Newc 1 Edinb 1 Glasgw 3 B QEH 0 Carsh 18 York 2 Wrexm 2 Salford 5 Belfast 1 L Barts 5 Sund 2 Covnt 2 Donc 0 M RI 1 Stevng 1 Nottm 0 Swanse 10 Wolve 0 Middlbr 1 Norwch 6 Abrdn 21 Ipswi 1 L St.G 6 Klmarnk 1 Prestn 0 Leic 0 Oxford 1 Bradfd 6 Airdrie 2 Basldn Clwyd 0 B Heart 4 Leeds 48 Colchr 3 Antrim 7 England 3 N Ireland 3 Scotland 2 Wales 6 UK Fig Percentage of incident dialysis patients with Hb 5 g/l at start of dialysis treatment in 14 median Hb in the late presenters was 94 g/l with only 33% of patients having a Hb 5 g/l compared with a median Hb of 101 g/l and 54% of patients having a Hb 5 g/l in the early presenters. In both groups there was large variation between centres in the percentage of patients having a Hb 5 g/l (9 % in the late presenters and % in the early presenters). Hb of patients at the time of starting HD was 97 g/l (IQR g/l) and in those starting PD it was 108 g/l (IQR 117 g/l). When starting dialysis, 43% of HD patients had a Hb 5 g/l, compared with 75% of PD patients. Incident dialysis patients from 13 were followed for one year and the median haemoglobin (and percentage with a Hb 5 g/l) of survivors on the same treatment at the same centre after a year was calculated for each quarter. Only patients who had Hb data for each of the four time points were included in this analysis. This was sub-analysed by modality and length of pre-rrt care (figures 8.3, 8.4). Hb was higher in the second quarter on dialysis than during the quarter at start of dialysis reflecting the benefits of treatment administered. Over 75% of incident patients surviving to a year had Hb 5 g/l regardless of the modality or the length of pre-rrt care. The annual distribution of Hb in incident dialysis patients is shown in figure 8.5. Since 05, the proportion of incident dialysis patients with Hb 51 g/l has fallen from 16% to 9%. The proportion of patients with Hb, g/l at the time of starting dialysis has increased from 43% in 05 to % in 14. In the 14 cohort whose date of presentation was available, 67% of patients in the late presentation group had Hb, g/l compared with 46% in the early presentation group. 1 Haemoglobin g/l PD early PD late HD early HD late Percentage of incident patients PD early PD late HD early HD late Start 3 months 6 months 12 months Time since commencing dialysis Fig haemoglobin, by time on dialysis and length of pre-rrt care, for incident dialysis patients in 13 Start 3 months 6 months 12 months Time since commencing dialysis Fig Percentage of incident dialysis patients in 13 with Hb 5 g/l, by time on dialysis and by length of pre-rrt care 174 Nephron 16;132(suppl1): Gilg/Rao/Williams

7 Percentage of incident patients 10 < >1(Hb, g/l) Year of start Fig Distribution of haemoglobin in incident dialysis patients by year of start ESA by time on dialysis in early vs. late presenters Incident dialysis patients from 13 were followed for one year and the percentages receiving an ESA were calculated for each quarter for survivors on the same treatment at the same centre after a year. This was subanalysed by modality and length of pre-rrt care (figure 8.6). For HD patients at the start of treatment there was a difference between early and late presenters in the percentage of patients receiving an ESA. This Percentage on ESA PD early PD late HD early HD late Start 3 months 6 months 12 months Time since commencing dialysis Fig Percentage of incident dialysis patients in 13 on ESA, by time on dialysis and by length of pre-rrt care difference was greatly reduced by three months after starting. For PD patients there was little difference between the early and late groups at start but there was a difference at the later time points. However, caution is advised when interpreting this as the number (27) of patients in the PD late presenter group was small. Anaemia management in prevalent dialysis patients Compliance with data returns for Hb and serum ferritin are shown for the 71 renal centres in the UK in table 8.3 for HD and PD patients. Completeness of data Table 8.3. Percentage completeness of data returns for haemoglobin and serum ferritin and percentages on ESA for prevalent HD and PD patients in 14 HD PD N Hb Ferritin % on ESA N Hb Ferritin % on ESA England B Heart B QEH Basldn Bradfd Brightn Bristol Camb Carlis Carsh Chelms Colchr Covnt Derby Donc Dorset Dudley Exeter Glouc Hull Ipswi Kent L Barts Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

8 Table 8.3. Continued HD PD N Hb Ferritin % on ESA N Hb Ferritin % on ESA L Guys L Kings L Rfree L St.G L West 1, Leeds Leic Liv Ain Liv Roy M RI Middlbr Newc Norwch 9 89 Nottm Oxford Plymth Ports Prestn Redng Salford Sheff Shrew Stevng Sthend Stoke Sund Truro Wirral Wolve York N Ireland Antrim Belfast Newry Ulster West NI Scotland Abrdn Airdrie D & Gall Dundee Edinb Glasgw Inverns Klmarnk Krkcldy Wales Bangor Cardff Clwyd Swanse Wrexm England 19, , N Ireland Scotland 1, Wales 1, UK 22, , Blank cells: centres with no PD patients or because data was not available All percentages on ESA are shown but it is believed that there were data problems for those centres with apparently less than % of HD patients or 45% of PD patients on ESA. Therefore, country averages are not shown these can be found in tables 8.4 and Nephron 16;132(suppl1): Gilg/Rao/Williams

9 returns was generally good for Hb and ferritin. For Hb, data were not available from London Guys. For ferritin, results are not given in later tables and figures for Carlisle (HD), Kirkcaldy (PD), Newry (HD) and Salford (HD & PD) because completeness was below %. Percentages on ESA are also shown in table 8.3. These are as they appear in the data received by the UKRR. For some centres, there were no data and for others the proportion of patients reported to be on ESA was very low. For the latter centres it is presumed that there were either problems with data entry and/or data transfer. s have been excluded from analyses of ESA use if fewer than % of HD patients or 45% of PD patients were reported to be receiving ESA. Summary statistics for haemoglobin, serum ferritin and ESA are shown for the 71 renal centres in the UK in table 8.4 for HD and table 8.5 for PD patients. Haemoglobin in prevalent haemodialysis patients The median Hb of patients on HD in the UK was 111 g/l (IQR g/l) and 81% of HD patients had a Hb 5 g/l (table 8.4). The median Hb by centre is shown in figure 8.7. Figure 8.8 shows compliance with the target range of Hb 5 and 41 g/l. The UK average (58%) was similar to that for 13 (59%) after rising for several years (53% in 10, 56% in 11, 57% in 12). The percentages of HD patients with Hb below g/l and above 1 g/l, as well as the percentages meeting the target, are shown by centre in figure 8.9. Funnel plots are shown for the minimum (Hb 5 g/l) and target range (Hb 5 and 41 g/l) in figures 8.10 and 8.11 respectively. Many centres complied well with respect to both the minimum and target range Hb standards. Some centres complied well Table 8.4. Summary statistics for haemoglobin, serum ferritin and ESA for prevalent HD patients in 14 N with Hb data Hb g/l 5 g/l 1 g/l ferritin mg/l % ferritin 5 mg/l % ferritin.0 and mg/l %on ESA ESA dose (IU/week) % with Hb 5 g/l and not on ESA England B Heart , B QEH ,2 13 Basldn ,0 8 Bradfd ,000 4 Brightn Bristol ,2 9 Camb Carlis , Carsh Chelms ,000 6 Colchr Covnt ,7 10 Derby Donc , Dorset ,000 4 Dudley Exeter ,333 7 Glouc Hull ,000 Ipswi Kent ,7 6 L Barts L Guys L Kings ,0 8 L Rfree L St.G L West 1, Leeds ,0 8 Leic ,000 2 Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

10 Table 8.4. Continued N with Hb data Hb g/l 5 g/l 1 g/l ferritin mg/l % ferritin 5 mg/l % ferritin.0 and mg/l %on ESA ESA dose (IU/week) % with Hb 5 g/l and not on ESA Liv Ain Liv Roy M RI Middlbr ,000 Newc , Norwch , Nottm , Oxford ,000 5 Plymth Ports Prestn Redng ,653 9 Salford ,0 24 Sheff ,875 9 Shrew ,000 9 Stevng Sthend ,000 7 Stoke Sund , Truro Wirral Wolve , York , N Ireland Antrim ,2 7 Belfast ,000 6 Newry ,7 10 Ulster ,000 3 West NI ,0 5 Scotland Abrdn Airdrie D & Gall Dundee Edinb Glasgw Inverns Klmarnk Krkcldy Wales Bangor Cardff Clwyd Swanse , Wrexm England 18, ,0 11 N Ireland ,000 6 Scotland 1, Wales 1, , UK 21, , Blank cells: centres excluded from analyses due to poor data completeness or low patient numbers or because the data item was not available ESA data only shown for those centres for which the % on ESA was % or more For ESA, these overall averages are for E,W & NI (not UK) 178 Nephron 16;132(suppl1): Gilg/Rao/Williams

11 Table 8.5. Summary statistics for haemoglobin, serum ferritin and ESA for prevalent PD patients in 14 N with Hb data Hb g/l 5 g/l 1 g/l ferritin mg/l % ferritin 5 mg/l % ferritin. and mg/l %on ESA ESA dose (IU/week) % with Hb 5 g/l and not on ESA England B Heart , B QEH , Basldn , Bradfd , Brightn Bristol , Camb Carlis , Carsh Chelms Colchr n/a Covnt , Derby Donc , Dorset , Dudley Exeter , Glouc Hull , Ipswi Kent , L Barts L Guys L Kings , L Rfree L St.G L West Leeds ,0 18 Leic , Liv Ain Liv Roy M RI Middlbr Newc Norwch , Nottm Oxford ,000 Plymth Ports Prestn Redng Salford Sheff , Shrew ,0 38 Stevng Sthend Stoke Sund Truro Wirral Wolve , York , Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

12 Table 8.5. Continued N with Hb data Hb g/l 5 g/l 1 g/l ferritin mg/l % ferritin 5 mg/l % ferritin. and mg/l %on ESA ESA dose (IU/week) % with Hb 5 g/l and not on ESA N Ireland Antrim ,2 15 Belfast , Newry ,0 14 Ulster 4 West NI ,0 9 Scotland Abrdn Airdrie 7 D & Gall Dundee Edinb Glasgw Inverns Klmarnk Krkcldy Wales Bangor Cardff Clwyd Swanse , Wrexm England 2, ,0 N Ireland , Scotland Wales , UK 3, ,148 Blank cells: centres excluded from analyses due to poor data completeness or low patient numbers or because the data item was not available n/a no PD patients ESA data only shown for those centres for which the % on ESA was 45% or more For ESA these overall averages are for E,W & NI (not UK) Haemoglobin g/l N = 21,491 Upper quartile Hb Lower quartile 95 1 Chelms 0 Carlis 0 Redng 0 Wolve 0 Edinb 0 Dorset 0 Derby 0 Ports 2 D&Gall 0 Sund 0 Belfast 0 Glouc 5 L West 14 Stoke 0 Bangor 0 Newc 1 Antrim 0 Wrexm 0 Bradfd 12 Camb 0 Plymth 0 Shrew 0 Norwch 7 M RI 0 Krkcldy 0 Leic 0 L Rfree 5 Colchr 0 Exeter 0 Clwyd 0 Liv Roy 0 Inverns 0 Airdrie 1 Dundee 0 Ulster 0 Stevng 0 Middlbr 0 Bristol 0 Truro 0 Hull 0 L St.G 0 Prestn 0 Glasgw 0 Cardff 5 Carsh 1 Wirral 0 Nottm 0 B Heart 0 Salford 1 Dudley 0 Oxford 0 Donc 0 Swanse 1 Ipswi 1 Brightn 0 L Barts 0 Leeds 1 B QEH 0 York 1 Basldn 0 Klmarnk 0 Abrdn 0 Covnt 3 Newry 5 England 1 N Ireland 0 Scotland 0 Wales 4 UK Fig haemoglobin in patients treated with HD by centre in 14 1 Nephron 16;132(suppl1): Gilg/Rao/Williams

13 N = 21,491 Upper 95% Cl % with Hb > and <1 g/l Lower 95% Cl 0 Exeter 2 D&Gall 0 Bristol 0 Nottm 0 Truro 5 Carsh 0 B Heart 0 Swanse 1 Dudley 0 Wrexm 3 Newry 0 Covnt 0 L Barts 5 L West 1 Wirral 1 Dundee 0 Bangor 1 B QEH 0 L Rfree 5 Colchr 1 Brightn 0 Dorset 0 Inverns 0 Stevng 0 Abrdn 1 Ipswi 0 Airdrie 0 Prestn 0 Bradfd 0 Krkcldy 0 Glouc 0 Newc 0 Ulster 0 York 0 Clwyd 0 Belfast 0 Derby 0 Shrew 0 Leeds 0 Hull 14 Stoke 0 Klmarnk 0 Plymth 0 L St.G 0 Donc 12 Camb 0 Norwch 0 Cardff 0 Middlbr 0 Leic 0 Glasgw 1 Antrim 7 M RI 0 Carlis 0 Liv Roy 1 Basldn 0 Ports 0 Sund 0 Oxford 0 Salford 0 Edinb 0 Wolve 1 Chelms 0 Redng 5 England 1 N Ireland 0 Scotland 0 Wales 4 UK Fig Percentage of HD patients with Hb 5 and 41 g/l by centre in 14 with the percentage with Hb 5 g/l (figure 8.10) but had a poor compliance with percentage of patients with Hb 5 and 41 g/l (figure 8.11). Table 8.4 can be used in conjunction with figures 8.10 and 8.11 to identify centres. Haemoglobin in prevalent peritoneal dialysis patients Overall, 83% of patients on PD had a Hb 5 g/l (table 8.5). The median Hb of patients on PD in the UK in 14 was 112 g/l (IQR g/l). The median Hb by centre is shown in figure The compliance with Hb 5 and 41 g/l is shown in figure In 14, 56% of prevalent PD patients had a Hb within the target range. The distribution of Hb in PD patients by centre is shown in figure Funnel plots for percentage with Hb 5 g/l and for the percentage of patients with Hb 5 and 41 g/l are shown in figures 8.15 and 8.16 respectively. Table 8.5 can be used in conjunction with figures 8.15 and 8.16 to identify centres in the funnel plots. Relationship between Hb in incident and prevalent dialysis patients in 14 The relationship between the percentage of incident and prevalent dialysis (HD and PD) patients with a Hb 5 g/l is shown in figure As expected, all centres had a higher percentage of prevalent patients achieving a Hb 5 g/l than that for incident patients. Overall in Hb >1 g/l Hb 1 g/l Hb < g/l 10 0 Exeter D&Gall Bristol West NI Nottm Sthend Truro Carsh B Heart Swanse Dudley Wrexm Newry L Kings Covnt L Barts L West Wirral Dundee Bangor B QEH L Rfree Colchr Brightn Dorset Inverns Stevng Abrdn Ipswi Airdrie Prestn Bradfd Krkcldy Glouc Newc Ulster York Liv Ain Clwyd Belfast Kent Derby Shrew Leeds Hull Stoke Klmarnk Plymth L St.G Donc Camb Norwch Cardff Middlbr Leic Glasgw Antrim M RI Carlis Sheff Liv Roy Basldn Ports Sund Oxford Salford Edinb Wolve Chelms Redng England N Ireland Scotland Wales UK Fig Distribution of haemoglobin in patients treated with HD by centre in 14 Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

14 95 Dotted lines show 99.9% limits Solid lines show 95% limits Dotted lines show 99.9% limits Solid lines show 95% limits ,000 1,0 Number of patients with data in centre Fig Funnel plot of percentage of HD patients with Hb 5 g/l by centre in ,000 1,0 Number of patients with data in centre Fig Funnel plot of percentage of HD patients with Hb 5 and 41 g/l by centre in N = 3,067 Upper quartile Hb Lower quartile Haemoglobin g/l Truro 0 Plymth 0 Abrdn 0 Redng 6 Salford 5 Chelms 9 Clwyd 0 Donc 2 Liv Roy 2 Ports 0 B Heart 0 Sund 0 Edinb 0 Norwch 0 Cardff 0 Antrim 14 L West 0 Wrexm 0 Bangor 10 Camb 0 Krkcldy 0 Bradfd 0 M RI 7 Newc 0 Dundee Wirral 0 Carlis 0 Stevng 0 Exeter 0 L St.G 0 Shrew 1 L Barts 2 Swanse 0 Newry 0 Stoke 0 Oxford 0 Middlbr 0 Bristol 5 Covnt 1 Wolve 0 Prestn 2 Dudley 0 Ipswi 0 Belfast 3 Hull 0 Derby 0 Brightn 0 B QEH 0 Inverns 0 Dorset 0 Leic 0 D&Gall 0 Glasgw 0 Nottm 0 Leeds 8 Carsh 0 York 3 Glouc 2 L Rfree 4 Basldn 0 Klmarnk 3 England 0 N Ireland 0 Scotland 1 Wales 2 UK Fig haemoglobin in patients treated with PD by centre in 14 N = 3,067 Upper 95% Cl % with Hb > and <1 g/l Lower 95% Cl 0 Middlbr 0 Inverns 0 Belfast 0 Krkcldy 5 Chelms 0 Newry 0 D&Gall 0 Carlis 9 Clwyd 0 Exeter Wirral 0 Edinb 14 L West 0 B Heart 0 Prestn 0 Bristol 0 L St.G 0 Oxford 0 Antrim 0 Stevng 2 Dudley 7 Newc 0 Dorset 10 Camb 3 Hull 0 Bangor 0 Leeds 0 B QEH 6 Salford 0 Stoke 0 Norwch 0 Wrexm 0 Derby 0 Bradfd 8 Carsh 0 Leic 0 Brightn 5 Covnt 0 Nottm 0 Abrdn 0 Glasgw 3 Glouc 0 York 0 Dundee 4 Basldn 0 Plymth 0 Klmarnk 0 M RI 1 L Barts 0 Sund 1 Wolve 2 Swanse 0 Redng 2 L Rfree 2 Ports 0 Shrew 0 Donc 2 Liv Roy 0 Cardff 0 Truro 0 Ipswi 3 England 0 N Ireland 0 Scotland 1 Wales 2 UK Fig Percentage of PD patients with Hb 5 and 41 g/l by centre in Nephron 16;132(suppl1): Gilg/Rao/Williams

15 Hb >1 g/l Hb 1 g/l Hb < g/l 10 0 Middlbr Inverns Belfast Krkcldy Chelms West NI Kent Newry D&Gall Carlis Clwyd Exeter Sthend Wirral Edinb L West B Heart Prestn Bristol L St.G Oxford Antrim Stevng Dudley Newc Dorset Camb Hull Bangor Leeds B QEH Salford Stoke Norwch Wrexm Derby Bradfd Carsh L Kings Leic Brightn Covnt Nottm Abrdn Glasgw Glouc York Dundee Basldn Sheff Plymth Klmarnk M RI L Barts Sund Wolve Swanse Redng L Rfree Ports Shrew Donc Liv Roy Cardff Liv Ain Truro Ipswi England N Ireland Scotland Wales UK Fig Distribution of haemoglobin in patients treated with PD by centre in Dotted lines show 99.9% limits Solid lines show 95% limits Dotted lines show 99.9% limits Solid lines show 95% limits Number of patients with data in centre Fig Funnel plot of percentage of PD patients with Hb 5 g/l by centre in Number of patients with data in centre Fig Funnel plot of percentage of PD patients with Hb 5 g/l and 41 g/l by centre in Exeter Bristol Carlis Bangor Chelms D&Gall L West Dorset Wrexm Glouc Edinb Shrew Belfast Colchr Derby Bradfd Airdrie Clwyd Inverns Plymth Antrim Ports B Heart Norwch Newc Dundee Truro Wirral West NI Redng Krkcldy Stoke Wolve Prestn Dudley M RI Carsh Ulster Swanse L Rfree L St.G Sund Kent Stevng Camb L Barts Leic Liv Roy Middlbr Brightn Hull Leeds Nottm B QEH Liv Ain Sthend Ipswi Glasgw Sheff Cardff Newry York Abrdn Donc Oxford Salford L Kings Klmarnk Covnt Basldn England N Ireland Scotland Wales UK Fig Percentage of incident and prevalent dialysis patients with Hb 5 g/l by centre in 14 Prevalent dialysis patients Incident dialysis patients Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

16 Upper 95% Cl % with Hb > g/l Lower 95% Cl Incident patients Prevalent patients Year Fig Percentage of incident and prevalent dialysis patients ( ) with Hb 5 g/l the UK, 82% of prevalent patients, compared with % of incident patients, had a Hb 5 g/l in 14. Compliance with the current minimum standard (Hb 5 g/ L) is shown by year ( ) for incident and prevalent dialysis patients in figure The decline in achieving this standard appears to be levelling off. Ferritin in prevalent haemodialysis patients The median and IQR for serum ferritin for patients treated with HD are shown in figure The percentages with serum ferritin 5 mg/l,.0 mg/l to mg/l, and mg/l are shown in figures 8., 8.21 and 8.22 respectively. Most centres achieved greater than % compliance with a serum ferritin 5 mg/l for HD patients. The HD population had a median ferritin value of 432 mg/l (IQR mg/l). Seventeen centres had greater than % of their patients having ferritin mg/l (figure 8.22) but serum ferritin correlated poorly with median Hb achieved and ESA dose (table 8.4). Ferritin in prevalent peritoneal dialysis patients The median and IQR for serum ferritin for patients treated with PD are shown in figure The percentages with serum ferritin 5 mg/l,. mg/l and mg/l, and mg/l are shown in figures 8.24, 8.25 and 8.26 respectively. The PD population had a lower median ferritin value (292 mg/l, IQR ) 1,0 1,0 1,0 N = 21,294 Upper quartile ferritin Lower quartile Ferritin μg/l 1, Middlbr 1 Antrim 2 D&Gall 0 Ulster 1 Stevng 0 Airdrie 4 Prestn 0 Chelms 0 Abrdn 1 Brightn 1 Bristol 2 Ipswi 8 Colchr 0 L Rfree 33 L Guys 1 Redng 0 Antrim 0 Wrexm 0 Nottm 0 L Barts 0 Norwch 0 Leeds 1 Ports 0 Wolve 2 Dorset 1 Truro 0 Derby 0 Bradfd 1 Edinb 2 Wirral 0 Sund 0 Newc 2 Donc 0 York 1 Glasgw 1 B QEH 1 Belfast 1 L St.G 0 Hull 2 Glouc 1 Covnt 0 Liv Roy 1 Shrew 1 B Heart 0 Clwyd 16 M RI 6 Carsh 15 Inverns 0 Leic 3 L West 0 Basldn 2 Dudley 0 Swanse 2 Dundee 0 Bangor 2 Stoke Camb 0 Klmarnk 2 Krkcldy 0 Exeter 0 Cardff 0 Oxford 5 England 10 N Ireland 1 Scotland 0 Wales 5 UK Fig ferritin in patients treated with HD by centre in Nephron 16;132(suppl1): Gilg/Rao/Williams

17 95 85 Upper 95% Cl % with ferritin > μg/l Lower 95% Cl N = 21, Ulster 0 Clwyd 8 Colchr 0 Wrexm 2 Dorset 1 Redng 2 Donc 0 Chelms 0 Airdrie 0 Antrim 2 Middlbr 1 Stevng 1 Brightn 2 D&Gall 0 York 0 Bangor 0 Abrdn 1 Covnt 1 Bristol 1 B Heart 0 Bradfd 1 Plymth 0 Norwch 0 Hull 2 Ipswi 1 Truro 0 Nottm 1 B QEH 1 Shrew 2 Wirral 1 L St.G 3 L West 33 L Guys 1 Ports 0 L Rfree 0 L Barts 6 Carsh 0 Derby 2 Stoke 0 Basldn 4 Prestn 0 Leeds 0 Leic 1 Glasgw 1 Belfast Camb 0 Sund 16 M RI 2 Glouc 2 Dudley 0 Wolve 0 Exeter 0 Cardff 0 Newc 0 Oxford 2 Dundee 1 Edinb 0 Liv Roy 0 Swanse 15 Inverns 2 Krkcldy 0 Klmarnk 5 England 10 N Ireland 1 Scotland 0 Wales 5 UK Fig. 8.. Percentage of HD patients with ferritin 5 mg/l by centre in 14 N = 21,294 Upper 95% Cl % with ferritin >0 and <0 μg/l Lower 95% Cl Basldn 0 Clwyd 6 Carsh 2 Dudley 3 L West 0 Hull 0 York 1 Covnt 0 Leic 1 Shrew 1 B Heart 0 Cardff 15 Inverns Camb 0 Exeter 1 L St.G 1 B QEH 2 Donc 2 Stoke 0 Bangor 0 Bradfd 16 M RI 2 Wirral 2 Dorset 1 Truro 2 Glouc 2 Dundee 0 Swanse 0 Oxford 0 Nottm 0 Derby 1 Redng 1 Glasgw 1 Ports 0 Antrim 0 Klmarnk 0 Wrexm 0 Liv Roy 0 L Barts 0 Newc 1 Belfast 0 Wolve 0 Norwch 0 Leeds 0 Sund 2 Krkcldy 0 Abrdn 8 Colchr 2 Ipswi 33 L Guys 1 Bristol 1 Edinb 1 Brightn 0 L Rfree 0 Airdrie 4 Prestn 1 Stevng 2 D&Gall 2 Middlbr 0 Ulster 0 Chelms 1 Plymth 5 England 10 N Ireland 1 Scotland 0 Wales 5 UK Fig Percentage of HD patients with ferritin.0 mg/l and mg/l by centre in 14 Upper 95% Cl N = 21,294 % with ferritin >0 μg/l Lower 95% Cl Dundee 0 Basldn 2 Dudley 2 Stoke 6 Carsh 0 York 0 Leic 0 Exeter 3 L West 0 Cardff 2 Dorset 0 Clwyd 1 B Heart 0 Bangor 15 Inverns 0 Nottm Camb 0 Hull 0 Oxford 16 M RI 1 Shrew 1 Covnt 0 Swanse 1 B QEH 2 Wirral 1 Truro 2 Glouc 0 Klmarnk 0 Wolve 1 Ports 1 L St.G 2 Donc 0 Bradfd 0 Newc 1 Redng 0 Derby 2 Krkcldy 1 Belfast 0 L Barts 0 Liv Roy 0 Leeds 1 Glasgw 1 Bristol 0 Wrexm 0 Antrim 1 Edinb 1 Brightn 0 Chelms 2 Ipswi 8 Colchr 0 Norwch 0 Sund 0 L Rfree 33 L Guys 0 Abrdn 1 Stevng 4 Prestn 0 Ulster 0 Airdrie 2 D&Gall 1 Plymth 2 Middlbr 5 England 10 N Ireland 1 Scotland 0 Wales 5 UK Fig Percentage of HD patients with ferritin mg/l by centre in 14 Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

18 1,0 1,000 N = 2,912 Upper quartile ferritin Lower quartile Ferritin μg/l Antrim 1 L Rfree 9 Newc 0 Nottm 0 Ports 0 Dundee 0 Donc 0 Sund 21 Plymth 1 Derby 3 Redng 7 Brightn 3 Hull 7 D&Gall 0 Belfast 0 B QEH Wirral 0 Klmarnk 3 Ipswi 0 Stoke 2 Swanse 0 Prestn 0 Middlbr 9 Clwyd 0 Leeds 2 Dorset 0 Bristol 0 Liv Roy 0 Newry 4 Stevng 2 Leic 16 Edinb 2 L St.G 6 Bradfd 8 Covnt 3 Oxford 3 B Heart 9 L Barts 0 York 0 Glasgw 0 Norwch 16 Camb 46 Carlis 0 Wrexm 11 L West 4 Shrew 4 Abrdn 0 Bangor 2 M RI 1 Exeter 35 L Guys 0 Truro 8 Carsh 5 Chelms 0 Inverns 1 Wolve 13 Glouc 0 Basldn 31 Cardff 12 Dudley 7 England 0 N Ireland 10 Scotland 14 Wales 7 UK Fig ferritin in patients treated with PD by centre in 14 Upper 95% Cl % with ferritin > μg/l N = 2,912 Lower 95% Cl 0 Antrim 0 Newry 0 Middlbr 0 Ports 0 Sund 0 Donc 2 Dorset 0 Nottm 1 Derby 3 Hull 21 Plymth 0 Leeds 2 Swanse 2 L St.G 0 Bristol 7 Brightn 11 L West Wirral 1 L Rfree 3 Redng 3 Oxford 9 Newc 2 Leic 46 Carlis 7 D&Gall 4 Abrdn 0 Glasgw 0 Prestn 0 B QEH 0 Dundee 3 Ipswi 0 Stoke 16 Camb 9 L Barts 1 Exeter 0 Liv Roy 0 Wrexm 0 Belfast 0 Klmarnk 8 Covnt 4 Stevng 3 B Heart 8 Carsh 0 Norwch 2 M RI 35 L Guys 0 York 6 Bradfd 0 Truro 5 Chelms 13 Glouc 16 Edinb 0 Bangor 0 Basldn 0 Inverns 1 Wolve 9 Clwyd 4 Shrew 12 Dudley 31 Cardff 7 England 0 N Ireland 10 Scotland 14 Wales 7 UK Fig Percentage of PD patients with ferritin 5 mg/l by centre in 14 N = 2,912 Upper 95% Cl % with ferritin > and <0 μg/l Lower 95% Cl 46 Carlis 2 L St.G 0 Newry 11 L West 3 Oxford 2 Dorset 8 Carsh 0 Truro 5 Chelms 1 Exeter 0 Donc 0 Glasgw 3 B Heart 0 Wrexm 3 Hull 13 Glouc 0 Belfast 2 M RI 0 Inverns 2 Leic 4 Stevng 4 Abrdn 0 York 2 Swanse 0 Leeds 0 Liv Roy 0 Middlbr 0 B QEH 0 Bristol 6 Bradfd 1 Wolve 16 Camb 0 Nottm 0 Ports 35 L Guys 1 Derby Wirral 0 Stoke 9 L Barts 8 Covnt 0 Bangor 0 Basldn 0 Sund 0 Klmarnk 0 Dundee 3 Ipswi 0 Prestn 21 Plymth 7 D&Gall 0 Norwch 9 Newc 7 Brightn 3 Redng 9 Clwyd 12 Dudley 31 Cardff 16 Edinb 4 Shrew 0 Antrim 1 L Rfree 7 England 0 N Ireland 10 Scotland 14 Wales 7 UK Fig Percentage of PD patients with ferritin. mg/l and mg/l by centre in Nephron 16;132(suppl1): Gilg/Rao/Williams

19 Upper 95% Cl N = 2,912 % with ferritin >0μg/L Lower 95% Cl Newry 4 Stevng 0 York 0 Basldn 0 Truro 16 Camb 13 Glouc 2 L St.G 9 Clwyd 0 Wrexm 46 Carlis 5 Chelms 0 Bangor 31 Cardff 0 Inverns 0 Dundee 2 M RI 8 Carsh 11 L West 12 Dudley 1 Exeter 0 B QEH 3 Oxford 0 Glasgw 1 Wolve 0 Klmarnk 3 B Heart 2 Leic 4 Shrew 0 Liv Roy 2 Dorset 0 Bristol 0 Belfast 6 Bradfd 0 Norwch 0 Sund 0 Ports 0 Middlbr 3 Hull 7 D&Gall 0 Leeds 0 Donc 0 Nottm 0 Stoke 2 Swanse 9 L Barts 8 Covnt Wirral 9 Newc 16 Edinb 1 Derby 3 Redng 4 Abrdn 7 Brightn 35 L Guys 3 Ipswi 21 Plymth 0 Prestn 1 L Rfree 0 Antrim 7 England 0 N Ireland 10 Scotland 14 Wales 7 UK Fig Percentage of PD patients with ferritin mg/l by centre in 14 than the HD population. Thirty-four centres reported fewer than % of PD patients being compliant with serum ferritin 5 mg/l although this appeared to have little bearing on their achieved median Hb or median ESA dose when compared with other centres (table 8.5). Erythropoietin stimulating agents in prevalent haemodialysis patients As shown in previous reports there was substantial variation in the average dose of ESA prescription used. The median dose for prevalent HD patients in England, Wales and Northern Ireland was 7,333 IU/week. The median dose varied from 4,000 IU/week (Middlesbrough, York) to 12,0 IU/week (Reading) with median Hb for these centres of 111 g/l (Middlesbrough), 108 g/l (York) and 116 g/l (Reading) (table 8.4). The 14 median dose was the same as that for 13. Erythropoietin stimulating agents in prevalent peritoneal dialysis patients For prevalent PD patients the median dose was lower than for HD patients. The median dose was 4,148 IU/ week with a range of 2,0 to 8,000 (table 8.5). The 14 median dose was similar to that for 13 (4,000 IU/week). ESA prescription and association with achieved haemoglobin For HD patients, centre level median Hb is plotted against median ESA dose in figure 8.27 and compliance with the RA standards for Hb 5 g/l and 41 g/l is plotted against median ESA dose in figure For these figures, Hb data was only used for those patients 118 Hb g/l Compliance with Hb 1 g/l ,000 5,000 7,000 9,000 11,000 13,000 ESA dose (IU/week) Fig Hb versus median ESA dose in HD patients on ESA, by centre in ,000 5,000 7,000 9,000 11,000 13,000 ESA dose (IU/week) Fig Compliance with Hb 1 g/l versus median ESA dose in HD patients on ESA, by centre in 14 Anaemia management in UK dialysis patients Nephron 16;132(suppl1):

20 Hb >1 g/l not on ESA Hb >1 g/l on ESA Hb 1 g/l Hb < g/l 10 0 Exeter Bristol West NI Nottm Sthend B Heart Swanse Newry L Kings Covnt Bangor B QEH Dorset Prestn Bradfd Glouc Newc Ulster York Belfast Kent Shrew Leeds Hull Donc Norwch Middlbr Leic Antrim Carlis Sheff Basldn Sund Oxford Salford Wolve Chelms Redng England N Ireland Wales E, W & NI Fig Distribution of haemoglobin in patients treated with HD and the proportion of patients with Hb.1 g/l receiving ESA by centre in 14 who were receiving an ESA and had dose data available. There was no meaningful relationship in either figure. It is known that not all patients treated with dialysis who have a Hb above 1 g/l are receiving ESA. It has been suggested that it may be inappropriate to include those patients not receiving ESA within the group not meeting this RA target. There are two reasons: firstly, the high Hb remains outside the control of the clinician, and secondly, the recent trials suggesting that it may be detrimental to achieve a high Hb in renal patients were based only upon patients treated with ESAs [8, 9]. Figures 8.29 and 8. show the percentages of HD and PD patients in each centre whose Hb lies above, within or below the RA guidelines of 1 g/l. These charts also show the proportion of patients with a Hb above the upper limit who were receiving, or were not receiving an ESA. These figures show that, in those centres for which useable ESA data was available, 23% of HD 10 Hb >1 g/l not on ESA Hb >1 g/l on ESA Hb 1 g/l Hb < g/l 0 Middlbr Belfast Chelms West NI Kent Newry Carlis Exeter Sthend B Heart Prestn Bristol Oxford Antrim Dorset Hull Leeds B QEH Norwch Bradfd L Kings Leic Covnt Nottm Glouc York Basldn Sheff Sund Wolve Swanse Shrew Donc England N Ireland Wales E, W & NI Fig. 8.. Distribution of haemoglobin in patients treated with PD and the proportion of patients with Hb.1 g/l receiving ESA by centre in Nephron 16;132(suppl1): Gilg/Rao/Williams

21 HD PD 45 HD PD (95% CIs) (95% CIs) Age range (years) Fig Percentage of dialysis patients on ESA, by age group and treatment modality (14) Age range (years) Fig Percentage of whole cohort (14) who are not on ESA and have Hb 5 g/l, by age group and treatment modality patients had a Hb.1 g/l and that most of these patients (78%) were on ESAs. For PD, 25% of patients had a Hb.1 g/l but only about half (49%) of these were on ESAs. ESA prescription: age and modality associations The proportion of patients on an ESA was higher for HD (87%) than PD (68%) and this difference was present and similar across all age groups (figure 8.31). The proportion of patients who had a Hb 5 g/l without requiring ESA is shown (by age group and modality) in figure ESAs and time on renal replacement therapy The percentage of patients on ESA by time on RRT and dialysis modality is shown in figure This is a cross-sectional analysis at the final quarter of 14. Patients who had previously changed RRT modality were included in this analysis. The proportion of PD patients on ESA rises with duration of RRT from 65% after 3 12 months to 83% after 10 or more years. For at least the first 10 years on RRT, a greater percentage of HD patients were receiving ESA treatment than patients on PD. Resistance to ESA therapy Figure 8.34 shows the frequency distribution of weekly ESA dose adjusted for weight by treatment modality. RA guidelines define resistance to ESA therapy as failure to reach the target Hb level despite SC epoetin dose >0 IU/kg/week (4 IU/kg/week IV epoetin) or darbepoetin dose >1.5 mcg/kg/week. For the purposes of this analysis the centres were restricted to those with good completeness for weight (over 75%) and ESA dose data (33 centres for HD and centres for PD). As per the above definition and assuming that HD patients largely receive ESA intravenously and PD patients receive ESA subcutaneously, the prevalence of high doses of ESA was 1.0% (N = 76) and 1.9% (N = 9) for HD and PD patients respectively. For these patients the dose range for HD was IU/kg/week and for PD 5 9 IU/kg/week. For patients on HD with high ESA doses, 47% (N = 36) had Hb, g/l and 49% were within 1 g/l. For patients on PD with high ESA doses, 44% (N = 4) had a Hb, g/l and the remaining 56% were within 1 g/l. The percentage of on ESA (95% CIs) HD PD 3 months to <1 year 1 2 years 2 3 years 3 5 years 5 10 years >10 years Time on RRT Fig on ESA by time on RRT (14) Anaemia management in UK dialysis patients Nephron 16;132(suppl1):