Researchers reported that unmarried men are more likely to suffer from clinical depression than married men.These findings were based on the marriage histories of 700 men suffering from depression and 600 men not suffering from depression.

A) Prospective observational study
B) Retrospective observational study
C) Experiment

Clinical Depression

A medical condition characterized by persistent feelings of sadness, hopelessness, and lack of interest, significantly affecting daily functioning.

Marriage Histories

Records or accounts of an individual's or population's past marriages, including dates, durations, and potentially the causes of dissolution.

Unmarried Men

Males who have never entered into a legal marriage, including those who are single, divorced, or widowed.