Application of life table method to naturalistic designs—A comparison of efficacy of tricyclic antidepressants and benzodiazepines in ambulatory depressives

Anyclinician who follows patients under naturalistic clinic conditions accumulates a wealth of observations about their responses to various treatments. Without random assignment to treatment or other features of the controlled experimental design, information on treatment efficacy obtained from these naturally occurring situations is limited. However, through the use of appropriate statistical techniques such as life table method, considerably...