Question

Anvecological study was done and found an association dietary different types of cancers. Researchers wish to test whether this is a true association. They between intake and recruit cancer patients from a hospital and interview them to gather information about their diet. They ask the cancer patients specifically artificial sweeteners. What study design is about their consumption of this? Researchers wish to explore whether the chemicals used in tire manufacturing increase the risk of death. They access the past employee records manufacturing plant and employees into two groups: those who worked directly in the manufacturing process and those who worked in an office. They follow up with the employees to see how many died in each group. What study design is this? of closed tire now categorize the

Answer 1

1. This is a case-control study. because the researcher wishes to study the association after the disease occurs. That means in this study researchers recruit cancer patients from hospitals and ask them about their diet.

This study is going backward means from the case (cancer) to exposure (Diet).

Answer - Case-control study

2. In this case, the researcher investigates backward by records and dived the employes under certain categories. Then investigate further and follow them to see the certain associations.

This is the feature of a Retrospective cohort study. This differs from the case-control study because in this study researchers go backward in the record to find exposure but exposed people still don't have the disease.

Answer - a Retrospective cohort study