Question

An experiment in which the lifestyles of people with lung cancer are compared with the lifestyles of those who do not have lung cancer is an example of

1- a case-control study.


2- the scientific method.


3- an observational study.


4- a human-intervention study.

Answer 1

1- a case-control study

Step-by-step explanation:

A case–control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute.