Control group studies of suicide survivors: a review and critique.

Empirical studies of suicide survivors with designs that include control groups are reviewed. Investigations are discussed individually with respect to those in which participating survivors are friends or a combination of many different relationships to the deceased, parents of the deceased child, and spouses. Following the review is a brief discussion of the commonalities of the findings and the most frequent methodological difficulties. Concluding comments suggest methodological improvements as well as issues and groups for which additional investigations are needed.