Cancer information sources used by patients to inform and influence treatment decisions.

Previous research has indicated that treatment staff often underestimate the informational needs of cancer patients. In this study, the authors determined the total number of information sources obtained and used to influence treatment decisions, and the clinical and demographic factors associated with the use of specific sources of information in cancer patients. Participants were identified by the statewide cancer registry and diagnosed in 2004 with breast, colorectal, lung, or prostate cancer.