Question

A doctor wants to study the relationship between blood pressure and meat consumption. She recruits 50 participants: 25 random members of a vegetarian club, and 25 random members of a "steak of the week" club. Every participant will have a blood pressure reading done once a month for five years. What kind of study is this?

Select one:

A. Case-control study

B. Single-blind study

C. Double-blind study

D. Completely randomized experiment

Answer 1

The study described is an observational study where the researcher observes and records the blood pressure readings of participants who are either part of a vegetarian club or a 'steak of the week' club.

Step-by-step explanation:

The study described is a observational study because the researcher does not directly manipulate the independent variable. In this case, the independent variable is the meat consumption.

The researcher simply observes and records the blood pressure readings of the participants over a period of five years. The study is not a controlled experiment because the participants are not randomly assigned to different groups.