Optimism and coping: do they influence health outcomes in women with breast cancer? A systemic review and meta-analysis.

Despite many limitations of this literature, including the heterogeneity of study designs, differing sample sizes, across different countries, cultures, ethnicities, and races, most studies support that optimism and coping are predictors of anxiety, distress, depression, or HRQOL. Awareness of these psychological constructs and their potential impact on anxiety, depression, and HRQOL are a high priority.