Health research designs: a short play. Jamie Fox Juan M. Lozano
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1 Health research designs: a short play Jamie Fox Juan M. Lozano
2 Compare and contrast common study designs RCT Prospective cohort Retrospective cohort Case control Demonstrate interactive teaching strategies and tools
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4 But once upon at time.
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8 Our PICO question P In healthy men with lots of hair, I (E) does shampooing daily, C O T T as compared with shampooing once or twice weekly, increase the risk of baldness (alopecia)? Type of question: harm Type of study: open..
9 Please take a few minutes (3) to think how you would conduct the following studies to answer the question: RCT Prospective cohort Retrospective cohort Case control
10 Case-control study Exposed to factor Unexposed to factor Exposed to factor Unexposed to factor Sample of individuals without disease Sample of individuals with disease Prospective (concurrent) cohort study Exposed to factor Unexposed to factor No disease Disease No disease Disease Retrospective (historical) cohort study Sample of individuals without disease Past time Exposed to factor Unexposed to factor Trace No disease Disease No disease Disease Present time Available in your workshop folder: tab 5 last page Follow Future time
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13 Randomized controlled trial (RCT) Sample of individuals with hair Shampoo daily Shampoo weekly Hairy Bald Hairy Bald Past time Present time Future time Follow
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15 Prospective (concurrent) cohort study Sample of individuals with hair Shampoo daily Shampoo weekly Hairy Bald Hairy Bald Past time Present time Future time Follow
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17 Retrospective (historical) cohort study Sample of individuals with hair Shampoo daily Shampoo weekly Hairy Bald Hairy Bald Track Past time Present time Future time
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19 Case-control study Shampoo daily Shampoo weekly Sample of bald individuals Shampoo daily Shampoo weekly Sample of hairy individuals Trace Past time Present time Future time
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22 In a study of risk factors for the development of asthma, investigators enrolled consecutive children during their first newborn well child check. The child s caretakers were asked whether or not a dog lived in the house. The children were followed for 5 years and the frequency of asthma in children with and without dogs in their house was assessed. What type of study was this? a. Randomized controlled trial (RCT) b. Prospective cohort c. Retrospective cohort d. Case control
23 In a study of risk factors for the development of asthma, investigators accessed records from a primary care clinic s electronic database. They identified all children with a diagnosis of asthma. They also identified children of similar age and sex who did not have asthma. The investigators then looked to see how many children in each group had dogs in their home before they were diagnosed with asthma. What type of study was this? a. Randomized controlled trial (RCT) b. Prospective cohort c. Retrospective cohort d. Case control
24 In a study of risk factors for the development of asthma, last month investigators accessed records from a primary care clinic s electronic database from The investigators determined which children had a dog in their house at the time of their birth. They then looked to see which children developed asthma by their 5 th birthday. What type of study was this? a. Randomized controlled trial (RCT) b. Prospective cohort c. Retrospective cohort d. Case control
25 In a study of risk factors for the development of asthma, investigators enrolled families for a study during their newborn visit. After enrollment, the investigators used a computer to determine which families would raise a dog or a goldfish in their home. They followed families for 5 years to see which children developed asthma by their 5 th birthday. What type of study was this? a. Randomized controlled trial (RCT) b. Prospective cohort c. Retrospective cohort d. Case control
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27 Feature Who assigns exposure Direction When Controlled trial Researcher (randomly, ideally) Exposure to outcome Now and future Prospective cohort Retrospective cohort Case - control Other Other Other Exposure to outcome Now and future Exposure to outcome Past Outcome to exposure Past
28 Health research designs: a short play Jamie Fox Juan M. Lozano
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