A study that followed, over a 20-year period, 500 users and 500 non-users of oral contraceptives to determine if there were any long-term side effects would be which of the following?

Question

Quizplus · Accepted Answer

This is a prospective study because it follows a group of individuals over time to observe outcomes, such as the long-term effects of using oral contraceptives, compared to those who do not use them.

A Study That Followed, Over a 20-Year Period, 500 Users