Fig. 1. Mean values of NHP 1 score for each section QOL before, 6 months and 2 years after coronary artery bypass, compared with expected values. Compared to preoperative period, patients had significantly improved the QOL, both 6 months and 2 years after CABG (p <0.01 for all sections QOL). Compared to the condition 6 months after CABG surgery, 2 years after QOL was improved in the PM section (p = 0.002), and for other sections there were no significant changes. CABG: coronary artery bypass graft; QOL: quality of life; NHP: Nottingham health profile; PM: physical mobility; SI: social isolation; ER: emotional reaction; En: energy.