Table 1.
Baseline variables
| Variable | All patients (n = 700) | With complete handover (n = 102) | Without complete handover (n = 598) | P value |
|---|---|---|---|---|
| Age, years | 74.3 ± 6.8 | 72.3 ± 6.7 | 74.7 ± 6.8 | 0.001 |
| Male gender | 423 (60.4) | 67 (65.7) | 356 (59.5) | 0.240 |
| Body mass index, kg/m2 | 23.7 ± 3.9 | 23.8 ± 4.2 | 23.7 ± 3.9 | 0.739 |
| Education, years | 9.0 (6.0, 12.0) | 9.0 (6.0, 12.0) | 9.0 (6.0, 12.0) | 0.779 |
| Preoperative comorbidity | ||||
| Previous stroke | 161 (23.0) | 21 (20.6) | 140 (23.4) | 0.531 |
| Hypertension | 446 (63.7) | 56 (54.9) | 390 (65.2) | 0.045 |
| Coronary heart disease | 232 (33.1) | 27 (26.5) | 205 (34.3) | 0.121 |
| COPD | 42 (6.0) | 5 (4.9) | 37 (6.2) | 0.613 |
| Chronic smokinga | 176 (25.1) | 32 (31.4) | 144 (24.1) | 0.117 |
| Diabetes mellitus | 190 (27.1) | 21 (20.6) | 169 (28.3) | 0.107 |
| Liver injuryb | 19 (2.7) | 2 (2.0) | 17 (2.8) | > 0.999 |
| Renal injuryc | 35 (5.0) | 4 (3.9) | 31 (5.2) | 0.589 |
| Alcoholismd | 63 (9.0) | 11 (10.8) | 52 (8.7) | 0.496 |
| Previous surgery | 398 (56.9) | 53 (52.0) | 345 (57.7) | 0.280 |
| Chronic benzodiazepines | 61 (8.7) | 6 (5.9) | 55 (9.2) | 0.273 |
| Preoperative laboratory tests | ||||
| Hematocrit < 30% | 106 (15.1) | 17 (16.7) | 89 (14.9) | 0.642 |
| Albumin < 30 g/L | 50 (7.1) | 8 (7.8) | 42 (7.0) | 0.766 |
| Glucose < 4.0 or > 10.0 mmol/L | 57 (8.1) | 4 (3.9) | 53 (8.9) | 0.092 |
| Na+ < 135.0 or > 145.0 mmol/L | 67 (9.6) | 9 (8.8) | 58 (9.7) | 0.781 |
| K+ < 3.5 or > 5.5 mmol/L | 73 (10.4) | 8 (7.8) | 65 (10.9) | 0.355 |
| ASA physical status | 0.130 | |||
| Class II | 398 (56.9) | 65 (63.7) | 333 (55.7) | |
| Class III | 302 (43.1) | 37 (36.3) | 265 (44.3) | |
Data are presented as mean ± SD, number (%), or median (interquartile range)
COPD chronic obstructive pulmonary disease, ASA American Society of Anesthesiologists
aDaily smoking of cigarettes up to half a pack for at least 2 years
bAlanine aminotransferase and/or aspartate aminotransferase higher than five times of the normal upper limit
cSerum creatinine level ≥ 177 µmol/L
dTwo drinks or more daily, or weekly consumption of the equivalent of 150 mL of alcohol