DrDeshi Has Gathered the Results of 52 Studies on Antenatal

Multiple Choice

Dr.Deshi has gathered the results of 52 studies on antenatal (during pregnancy) and subsequent postpartum depression to learn whether antenatal depression is a significant risk factor for postpartum depression.To combine the results of all 52 studies and see how strongly the two problems are related,she should use a

A) correlational study.
B) case study.
C) mode.
D) meta-analysis.