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To assess health-related quality of life (HRQOL) in patients after cardiac surgery with emphasis on sex differences.

Between September 2004 and September 2005, 534 patients (413 males and 121 females) were consecutively included. HRQOL was measured by the short-form 36 (SF-36) before surgery with follow-up 6 and 12 months after surgery.

Five hundred and twenty-one patients were alive after 12 months, 462 (89%) and 465 (89.4%) responded after 6 and 12 months, respectively. Female patients had less favorable scores than male patients on most subscales of the SF-36 both before and after surgery. Both male and female patients improved substantially after surgery, but female patients reported significantly less improvement on two of eight subscales of the SF-36; role emotional and bodily pain …