Question

5. A study is planned to assess the effectiveness of a new combination drug for treating nephrolithiasis (kidney stone). One hundred patients with nephrolithiasis will be randomly assigned to receive either the new combination drug or the standard surgical intervention. The efficacy of the new drug will be measured by the time it takes a patient to return to normal activities, measured in days. Identify the appropriate research design for this study a. Prospective cohort study b. Randomized controlled trial c. Case control study d. Retrospective cohort study 6. A research study was conducted to assess whether there is an association between stress disorders in pregnancy and autism spectrum disorders (ASD) in their children born out of these pregnancies. Forty children with ASD and fifty without ASD were selected for investigation. Mothers were asked about whether they suffered from stress disorders during their pregnancy This study is an example of a: a. Prospective cohort study b. Retrospective cohort study c. Case control study d. Randomized controlled trial 7. In a study of 380 diabetics and nondiabetics, patients were classified as underweight, normal weight, overweight and obese according to their diabetes status. The probability of being normal weight is 0.31 and the probability of having diabetes is 0.39. The probability of being both diabetic and normal weight is 0.09. Comparing the unconditional probability of having diabetes to the conditional probability of diabetes given weight would you say weight and diabetes are independent or not? Weight and diabetes are independent Weight and diabetes are not independent a. b.

Answer 1

Solution

5) The type of study is : option b

Randomized control trial

The people participating in the trial are randomly allocated to either the group receiving the treatment under investigation or to a group receiving standard treatment as the control.