This module discussed the importance of selecting a suitable study design and me

Question

This module discussed the importance of selecting a suitable study design and methods for data analysis based on a research question. For each of the following research questions. state the type of study described by each of the following paragraphs. Also explain your reasoning for why you chose the study type.

a.The Tumor Registry in a certain US state was used to identify all primary cases of bladder cancer in the state during a given period. These cases were compared to a sample of non-cases from the same state that have been matched on age and time of diagnosis. All subjects or their surviving relatives in both groups were interviewed to collect information on saccharin consumption and other known risk factors for bladder cancer.

b. In the Hanford study of nuclear power workers (1977), 3500 certified deaths occurred among plant workers between 1944 and 1972. Among these deaths, a significantly greater proportion of workers exposed to low levels of ionizing radiation than unexposed workers had died of RES (reticuloendothelial system) cancers.

Explanation / Answer

a.) Cohort study, in this clinical study type we study on people who have certain conditions or receive a particular treatment are compared over time and compared with another people who are not affected by any condition.

b.) Case control study, it begins with the outcome and do not follow people over time. Researchers choose people with a particular results and check their records to acertain wahtsapp experiences they had. They compare the odds of having an experience with the outcome to the odds of having an experience without the outcome.

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