The study was designed to clarify the relationship between psychosocial variables and survival by controlling for other variables known to affect survival. The control was achieved by using a value for survival that was based on predictions for each of the cancer sites studied. These predictions were made through the regression of the survival rates of cancer patients on biological, disease, and medical variables. Part I: Determining Survival Expectations Subjects Survival expectations were determined through analysis of information on deceased cancer patients. Three cancer sites were selected for study. They were lung, breast, and rectocolon. These sites were selected on the basis of the relative frequency of their incidence in the general popula- tion and their incidence specifically in the elderly popula- tion which was the group selected for analysis in this study. The population Cancer deaths in the general population are largely from cancers of the lung, breast, or rectocolon. As a result, subjects with cancer of one of these sites are more readily available. Data on deaths in 1978 (National Center for Health Statistics, 1982) revealed that lung cancer was the leading cause of cancer deaths among men. It was the third leading cause among women. Rectocolon cancers were the