Physicians and nurses' knowledge and attitudes towards advance directives for cancer patients in Saudi Arabia.

This study aimed to investigate physicians' and nurses' knowledge and attitudes toward advance directives (ADs) for cancer patients, which empower patients to take decisions on end-of-life needs if they lose their capacity to make medical decisions. A cross-sectional study was conducted using convenience sampling. The outcomes were responses to the knowledge and attitude questions, and the main outcome variables were the total scores for knowledge and attitudes toward ADs.