The longitudinal association of optimism with quality of life after percutaneous coronary intervention for coronary heart disease; The THORESCI study

These data indicate marked individual differences in the magnitude of changes in optimism following PCI. Both higher levels and increases in optimism were associated with higher and improving QoL. Depression and anxiety, but not health behavior adherence, explained part of this relationship. Optimism might be an important psychological factor to address in cardiac rehabilitation.