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Table 1 Characteristics of the study population of 272 patients undergoing elective isolated coronary artery bypass graft surgery

From: Quality of life 10 years after cardiac surgery in adults: a long-term follow-up study

Variable Overall (N = 272) Alive (a) (N = 118) NR & Died (b) (N = 154) p-value
(a) vs (b)
Male 213 (78) 100 (85) 113 (73) 0.026
Age 65 ± 10 63 ± 9 66 ± 10 0.016
Living maritally 215 (79) 99 (84) 116 (75) 0.057
Living in an urban area 118 (43) 55 (47) 63 (41) 0.39
Professionally active 48 (17) 23 (20) 25 (16) 0.52
On invalidity 7 (3) 4 (3) 3 (2) 0.47
Socio-economic class
 Upper middle class 20 (7) 9 (8) 11 (7) 0.51
 Middle class 52 (19) 13 (11) 39 (25) 0.011
 Lower middle class 66 (24) 37 (31) 29 (19) 0.73
 Skilled working class 77 (28) 39 (33) 38 (25) 0.69
 Working class 41 (15) 15 (13) 26 (17) 0.81
 Others 16 (6) 5 (4) 11 (7) 0.44
Level of education ≥ high school diploma 49 (18) 25 (21) 24 (16) 0.27
Diabetes mellitus 87 (32) 30 (25) 57 (43) 0.049
Peripheral arterial disease 67 (25) 24 (20) 43 (36) 0.16
Atrial fibrillation 5 (2) 1 (1) 4 (3) 0.14
Depression 15 (6) 5 (4) 10 (8) 0.59
LVEF
 > 50% 184 (68) 80 (68) 104 (88) 0.78
 30–50% 75 (28) 33 (28) 42 (36) 0.93
 < 30% 13 (5) 5 (4) 8 (7) 0.67
CCS class ≥3 50 (18) 18 (15) 32 (27) 0.27
NYHA class ≥3 23 (9) 6 (5) 17 (14) 0.12
Complicated Outcome 38 (14) 10 (9) 28 (24) 0.023
  1. NR, Non-responders (N = 73 patients missing at least one questionnaire at 10 years); Died: N = 81 patients had died at 10 years. Data are presented as mean ± standard deviation or number (percentage)
  2. COPD, chronic obstructive pulmonary disease; LVEF, left ventricular ejection fraction, CCS, Canadian Cardiovascular Society; NYHA, New York Heart Association. Variables highlighted in bold show statistically significant differences