To study the effects of cigarette smoking on breast cancer, 500 healthy teenaged girls were recruited to participate in a study that tracked their smoking (or nonsmoking) behavior and cancer incidence for five decades. This is an example of

Question

Quizplus · Accepted Answer

This is an example of a prospective study because it involves following a group of individuals over time to observe outcomes, such as the development of breast cancer in relation to their smoking habits.

To Study the Effects of Cigarette Smoking on Breast Cancer