For each of the following scenarios, determine the type of research study design

Question

For each of the following scenarios, determine the type of research study design to be used. • Using patient records of women who were diagnosed with chronic obstructive pulmonary disease in 1960, determine whether they were exposed to smoking (personal or passive). Follow them forward and determine their incidence of lung cancer and their survival status. • Identify a group of children with leukemia that is currently in remission and follow them forward for 20 years to determine their risk of other cancers and their survival status. • Identify individuals with rheumatoid arthritis (cases) and individuals without rheumatoid arthritis (controls). Interview both cases and controls to determine their past and present diets and specific foods most frequently eaten such as milk, fruit, and so forth. • Identify all cases of human immunodeficiency virus infection within a specific community. • Select a group of individuals with Alzheimer’s disease. Randomize them into three groups—one group will be treated with drug A, one group will be treated with drug B, and the third group will be treated with a placebo. Follow all groups forward for the next 5 years to determine improvement/decline in the disease.

Explanation / Answer

Given that for the three groups the drug

Group A is treated with drug A

Group B is treated with drug B

Third group with a placebo

After five years all the three groups follow their site and drugs properly the disease may decline ,otherwise their is a increment in the disease after five years

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