Question

MATCHING A. RCT B. Cross sectional study C. Retrospective Cohort study D.. Prospective Cohort study E. Case control study 1. A large group of people are enrolled in a study to investigate the effects of diet on heart disease Everyone isfree of heart disease at the start of the study and people are followedfor10 yearsto see if disease develops. What study design is this? 2. Researchers wishto investigate the association between complications during Caesarian section delivery and hospital of choice. They recruit a group of 500,000 women in New York City of all ages, ethnicities and social backgrounds and record whetherthe women have ever had a C-section delivery and the hospital at which they gave birth. What type of study is this? 3. There is a new smoking reduction product onthe market, oral nicotine inhalers, that researchers wish to test the effectiveness of. They recruit smokersfor a study and randomly divide them intotwo groups. One group receivesthe oral nicotine inhalers and the other group receives nicotine gum. The researchers measure the number of cigarettes smoked by the individuals in each group for a period of 6 months. What study design is this? 4. An ecological study was done and found an association between dietary intake and differenttypes of cancers. Researchers wish to test whetherthis is a true association. They recruit cancer patients from a hospital and interviewthem to gather information about their diet. They ask the cancer patients specifically about their consumption of artificial sweeteners. What study design is this? 5. Researchers wishto explore whetherthe chemicals used in tire manufacturingincreasethe risk of death. They access the past employee records of a now closed tire manufacturingplant and categorize the employeesintotwo groups: those who worked directly in the manufacturingprocess and those who workedin an office. They follow up with the employees to seehow many died in each group. What study designis this?

Answer 1

1. (D). Prospective study.

2. (E). Case control study.

3.(A). RCT.

4.(B). Cross sectional study.

5.(C). Retrospective cohort study.