Estimating the Prevalence of Atopic Dermatitis in School Students of Jejudo, Korea

Transcription

1 J Prev Med Public Health 2009;42(3):7-76 DOI: 0396/jpmph Estimating the Prevalence of Atopic Dermatitis in School Students of Korea Jong-Myon Bae 2) Kyung-Sue Shin 3) Cheju National University Institute of Medical Science ) Department of Preventive Medicine 2) Department of Paediatrics 3) Cheju National University School of Medicine Objectives : The frequency of visiting clinics in for treating atopic dermatitis (AD) has been reported to be higher than that for other counties of Korea The aim of this work was to estimate the prevalence of AD for the students of the primary middle and high schools in Korea Methods : We planned to evaluate about 5000 students so classes were randomly selected by random systematic sampling methods The parents of all the students in the selected classes were asked to respond to a structured questionnaire concerned with the prevalence of AD Results : The prevalence of AD based on ever being diagnosed by a doctor on currently being diagnosed by a doctor on ever being treated for AD by a doctor on currently being treated for AD by a doctor was 2557% (95% CI= ) 467% (95% CI=45-49) 290% (95% CI=26-222) and 44% (95% CI=42-46) respectively Conclusions : On comparing the prevalence of AD the students in had a higher number of recurrence events in spite of their lower number of cases Further studies are needed to evaluate these aspects of AD J Prev Med Public Health 2009;42(3):7-76 Key words : Atopic dermatitis Prevalence Questionnaire Students (atopic dermatitis) [] [9] (target population) [2] [67] 2005 [3] 3% [8] [45]

2 72 Table Sampling frames for systematic random sampling * Primary grade Primary grade 3 Primary grade 5 Middle grade High grade 020 (83) 02 (95) 023 (2) 028 (69) 024 (64) 6 (922) * number of classes in sampled (target) students 09 (7) 09 (73) 09 (77) (62) 09 (63) 47 (346) 33% [0] [] Z- (systematic sampling) (sampling frame) Table / 2 4 [2] 95% (CI) [3] CI ( ) 2 0% - ) ( ( (odds ratio OR) 95% 95% ) 2 ( ) 5382 (Table 2) Table 2 Percents of the sampled and responded from target students Primary grade Primary grade 3 Primary grade 5 Middle grade High grade - Target (column %) Sample (%) * Responded (%) (806) (949) (2092) (244) 083 (2009) (000) 0829 (34) 0904 (46) 0999 (80) 446 (667) 204 (48) 5382 (330) * percent of the sampled over target students percent of the responded over sampled students 0730 (8806) 0780 (8628) 0835 (8358) 240 (8575) 020 (8472) 4605 (8556) Table 3 The estimated prevalence (%; prv) of atopic dermatitis diagnosed ever by doctors 8556% (Table 2) 8806% % ( ) 2557% (95% CI= ) 305% (95% CI= ) (Table 3) Primary grade -2 Primary grade 3-4 Primary grade 5-6 Primary grade -6 Middle grade -3 High grade % 2235% ( ) 467% (95% CI= )

3 73 Table 4 The estimated prevalence (%; prv) of atopic dermatitis diagnosed currently by doctors Primary grade -2 Primary grade 3-4 Primary grade 5-6 Primary grade -6 Middle grade -3 High grade Table 5 The estimated prevalence (%; prv) of atopic dermatitis treated ever by doctors Primary grade -2 Primary grade 3-4 Primary grade 5-6 Primary grade -6 Middle grade -3 High grade Table 6 The estimated prevalence (%; prv) of atopic dermatitis treated currently by doctors ) 44% (95% CI= ) 862% (95% CI= ) 008% 029% (Table 6) 350% 478% 39 (95% CI= ) 477 (95% CI= ) (Table 7) Primary grade -2 Primary grade 3-4 Primary grade 5-6 Primary grade -6 Middle grade -3 High grade Table 7 Relation between atopic histories of parents and atopic dermatitis diagnosed ever by doctors in their children History of atopic disease Crude OR (95% CI) (Table 4) 490% 4% Parents Either Both Father Atopic disease Allergic rhinitis Atopic dermatitis Urticaria Asthma Food allergy Drug allergy Mother Atopic disease Allergic rhinitis Atopic dermatitis Urticaria Asthma Food allergy Drug allergy 888% (95% CI= ) 0% 39 ( ) 477 ( ) 308 ( ) 245 (99-300) 656 (448-96) 305 ( ) 45 (98-872) 268 (48-485) 408 (29-287) 297 ( ) 237 (96-288) 596 (49-847) 220 (58-308) 383 (86-79) 322 (202-52) 36 (44-696) ( ) 290% (95% CI= ) 2707% (95% CI= ) 734% 598% (Table 5) 2308% 96% ( 8556% 8358% 8806% [45] [67]

4 74 [3] [0] [] International Study of Asthma and Allergic disease in Childhood (ISAAC) [8] ISAAC [9-2] 263% (95% CI=86-339) 888% (95% CI= ) 2207% (95% CI= ) 2707% (95% CI= ) [8] [27] 25 (95% CI=29-52) 34 (95% CI=26-44) ; [28] 62 (95% CI=48-80) 535 (95% CI=40-7) [29] 5 (95% CI=2-8) 6 (95% CI=3-20) [22] [26] 2000 [30] [23] [32425] % 726% 258 (95% CI= ) 308 (95% CI= ) [23] 376% 2009% [3] 240 (95% [0] CI=27-265) 297 (95% CI= ) [332] 2007 [26] 3436% (95% CI= ) 305% (95% CI= ) (crude)

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