Univariate analysis of all variables for high and low scores in the physical (PCS) and mental component summary (MCS) scores of the 36 item short form health survey (SF-36)
| Variable | Total (n = 437) | PCS | MCS | ||||
|---|---|---|---|---|---|---|---|
| High (n = 279) | Low (n = 158) | p Value | High (n = 286) | Low (n = 151) | p Value | ||
| AF, atrial fibrillation; BMI, body mass index; BSA, body surface area; CCS, Canadian Cardiovascular Society class; CVA, cerebrovascular accident; EF, ejection fraction; GIT, gastrointestinal tract; IABP, intra-aortic balloon pump; IV, intravenous; LV, left ventricular; MI, myocardial infarction; NYHA, New York Heart Association class; PTCA, percutaneous transluminal coronary angioplasty; PVD, peripheral vascular disease; TIA, transient ischaemic attack. | |||||||
| Female sex | 79 (18.1%) | 48 | 31 | 0.53 | 50 | 29 | 0.66 |
| Age at surgery >70 | 137 (31.3%) | 88 | 49 | 0.91 | 100 | 37 | 0.03 |
| Symptom status (stable) | 202 (46.2%) | 127 | 75 | 0.7 | 122 | 80 | 0.04 |
| Diabetes | 87 (19.9%) | 47 | 40 | 0.03 | 57 | 30 | 0.99 |
| Hypertension | 228 (52.2%) | 139 | 89 | 0.19 | 142 | 86 | 0.16 |
| Hypercholesterolaemia | 270 (61.8%) | 173 | 97 | 0.9 | 176 | 94 | 0.88 |
| Smoking | 274 (62.7%) | 174 | 100 | 0.85 | 170 | 104 | 0.05 |
| Preoperative AF | 11 (2.5%) | 7 | 4 | 1 | 8 | 3 | 0.75 |
| Postoperative AF | 99 (22.7%) | 63 | 36 | 0.96 | 67 | 32 | 0.6 |
| Renal problems | 2 (0.5%) | 1 | 1 | 1 | 2 | 0 | 0.54 |
| GIT problems | 88 (20.1%) | 48 | 40 | 0.04 | 61 | 27 | 0.39 |
| Respiratory problems | 25 (5.7%) | 12 | 13 | 0.09 | 11 | 14 | 0.03 |
| PVD | 32 (7.3%) | 15 | 17 | 0.04 | 16 | 16 | 0.05 |
| Preoperative MI | 157 (35.9%) | 96 | 61 | 0.4 | 101 | 56 | 0.71 |
| Last MI > 30 days | 191 (43.7%) | 119 | 72 | 0.56 | 126 | 65 | 0.84 |
| Perioperative MI | 4 (0.9%) | 4 | 0 | 0.3 | 4 | 0 | 0.3 |
| Thrombolysis within last 24 hours | 15 (3.4%) | 9 | 6 | 0.75 | 8 | 7 | 0.32 |
| Previous failed PTCA/stent | 49 (11.2%) | 29 | 20 | 0.47 | 33 | 16 | 0.77 |
| Poor LV function (EF <30%) | 22 (5%) | 12 | 10 | 0.35 | 13 | 9 | 0.52 |
| Angina (CCS III–IV) | 206 (47.1%) | 126 | 80 | 0.27 | 128 | 78 | 0.17 |
| Dyspnoea (NYHA III/IV) | 85 (19.5%) | 45 | 40 | 0.02 | 50 | 35 | 0.15 |
| Congestive heart failure | 43 (9.8%) | 21 | 22 | 0.03 | 22 | 21 | 0.04 |
| IV nitrates | 38 (8.6%) | 20 | 18 | 0.13 | 20 | 18 | 0.08 |
| Cardiogenic shock (IV inotropes) | 3 (0.7%) | 3 | 0 | 0.56 | 3 | 0 | 0.56 |
| Preoperative IABP | 14 (3.2%) | 10 | 4 | 0.78 | 9 | 5 | 1 |
| Postoperative IABP | 17 (3.9%) | 11 | 6 | 0.94 | 13 | 4 | 0.33 |
| Preoperative CVA or TIA | 18 (4.1%) | 7 | 11 | 0.02 | 8 | 10 | 0.05 |
| Postoperative CVA or TIA | 5 (1.1%) | 2 | 3 | 0.36 | 4 | 1 | 0.66 |
| Elective priority | 116 (26.5%) | 73 | 43 | 0.81 | 76 | 40 | 0.99 |
| BSA <2 m2 | 261 (59.7%) | 168 | 93 | 0.78 | 176 | 85 | 0.29 |
| BMI >30 kg/m2 | 128 (29.3%) | 73 | 55 | 0.05 | 79 | 49 | 0.29 |
| Use of radial artery graft | 210 (48.1%) | 140 | 70 | 0.27 | 151 | 77 | 0.72 |
| Cardiopulmonary bypass | 201 (46%) | 131 | 70 | 0.59 | 137 | 64 | 0.27 |
| Left main stem disease | 41 (9.4%) | 25 | 16 | 0.69 | 23 | 18 | 0.19 |
| Ventilation >24 hours | 44 (10.1%) | 32 | 12 | 0.2 | 32 | 12 | 0.28 |
| Low cardiac output | 27 (6.2%) | 18 | 9 | 0.75 | 19 | 8 | 0.58 |
| Infective complications | 25 (5.7%) | 11 | 14 | 0.03 | 11 | 14 | 0.02 |
| Pulmonary complications | 36 (8.2%) | 21 | 15 | 0.47 | 17 | 19 | 0.02 |
| Renal complications | 31 (7.1%) | 20 | 11 | 0.94 | 23 | 8 | 0.29 |
| GIT complications | 11 (2.5%) | 8 | 3 | 0.75 | 8 | 3 | 0.76 |
| Sternal resuturing | 12 (2.7%) | 5 | 7 | 0.11 | 6 | 6 | 0.25 |
| Readmission to ITU | 6 (1.4%) | 1 | 5 | 0.03 | 5 | 1 | 0.67 |
| Reoperation for bleeding | 26 (6%) | 17 | 9 | 0.86 | 16 | 10 | 0.67 |
| Length of stay >7 days | 422 (96.6%) | 266 | 156 | 0.06 | 274 | 148 | 0.23 |
| Type D personality | 150 (34.3%) | 77 | 73 | <0.001 | 59 | 91 | <0.001 |
| Anxiety | 429 (98.2%) | 275 | 154 | 0.47 | 284 | 145 | 0.02 |
| Depression | 435 (99.5%) | 277 | 158 | 0.54 | 286 | 149 | 0.12 |