two parts. The first part pertains to the methods used to
determine the expected survival of individuals with cancer of
the lung, breast, and rectocolon. The second part pertains
to the psychosocial analysis of the patients interviewed.
This part includes the methods used to determine relative
survival from expected survival and the methods used to test
the six hypotheses.
Research Questions and Hypotheses
The relationship between psychosocial variables and
survival was considered in four initial research questions.
Two questions specifically dealt with the correlations
between psychosocial variables and survival. The third
concerned the proportion of variability in survival that
could be accounted for by a set of psychosocial variables.
The fourth question was intended to further clarify the
contribution of disease variables to differences in survival.
It had to do with the combined effects of a set of
psychosocial variables and concurrent physical conditions
other than the cancer. This disease variable was called
"co-morbidity."
The four research questions were stated as follows:
1. What psychosocial variables are positively
correlated with survival?
2. What psychosocial variables are negatively
correlated with survival?