Aresearcher conducts a study to test whether attending weekly support groups decreases depressive symptoms. based on this information only, is this an example of descriptive or analytic epidemiology?

Based on the information given, that is an example of Analytic epidemiology.

Explanation:

While descriptive epidemiology generates hypothesis, goes deep into answering questions and try to develop the causes, patterns or factors that increase the risk of disease, analytic epidemiology test those hypothesis trying to anser WHY and how something OCCURS. In this case, this study is testing whether attending weekly support groups decreases depressive symptoms. The key feature of analytic epidemiology is a comparison group.

depression is an ongoing sadness\lack of motivation. you feel and feel like its never going to get better. you're so sad to the point you think of death.

anxiety is an ongoing feeling of paranoia\ feeling like everyone is watching you and making fun of you. you get nervous easily and feel like the room is spinning.  

yes, they cause death every year. its a long, exhausting battle. only few make it through as sad as it sounds.

explanation: