Which type of observational study gives you better quality data, ...

[jessicacav]

Which type of observational study gives you better quality data, a retrospective study or a prospective study, and why?

Question 2

The case-control design has some clear advantages over randomized experiments as well as over other observational studies. Name two of those advantages.

[anoriega3]

Answer to Question 1

A PROSPECTIVE STUDY IS A BETTER PROCEDURE BECAUSE PEOPLE OFTEN DO NOT REMEMBER PAST EVENTS ACCURATELY.

Answer to Question 2

ANY TWO OF THE FOLLOWING ARE OK: EFFICIENCY IN TERMS OF TIME OR MONEY; NOT HAVING TO WORRY ABOUT THE ETHICS INVOLVED IN RANDOMLY ASSIGNING PEOPLE TO EITHER HARMFUL OR BENEFICIAL TREATMENTS; AND INCLUSION OF ENOUGH PEOPLE WITH THE CONDITION YOU ARE STUDYING.

[jessicacav]

TYSM

[sultansheikh]

Gracias!