Table 2.
Preoperative assessment
|
30-day mortality |
Pulmonary complications |
||||||
|---|---|---|---|---|---|---|---|
| No (n=845) | Yes (n=268) | p value | No (n=526) | Yes (n=577) | p value | ||
| Haemoglobin, g/L* | 118·6 (24·7) | 116·1 (24·1) | 0·150 | 118·5 (23·5) | 117·6 (25·4) | 0·537 | |
| Missing | 18 | 4 | .. | 15 | 7 | .. | |
| White blood cell count, ×109 per L* | 10·5 (7·6) | 10·6 (6·8) | 0·859 | 10·1 (5·1) | 10·8 (8·9) | 0·169 | |
| Missing | 19 | 4 | .. | 15 | 8 | .. | |
| Preoperative chest x-ray | .. | .. | 0·0041 | .. | .. | <0·0001 | |
| Not performed | 320 (79·4%) | 83 (20·6%) | .. | 232 (58·0%) | 168 (42·0%) | .. | |
| Yes: normal | 321 (77·4%) | 94 (22·6%) | .. | 205 (49·8%) | 207 (50·2%) | .. | |
| Yes: abnormal | 199 (68·9%) | 90 (31·1%) | .. | 84 (29·4%) | 202 (70·6%) | .. | |
| Missing | 5 | 1 | .. | 5 | 0 | .. | |
| Preoperative thorax CT | |||||||
| Not performed | 598 (78·1%) | 168 (21·9%) | 0·013 | 376 (49·5%) | 384 (50·5%) | 0·077 | |
| Performed: normal | 96 (75·0%) | 32 (25·0%) | 0·796 | 60 (47·6%) | 66 (52·4%) | 0·987 | |
| Performed: consolidation | 44 (75·9%) | 14 (24·14%) | 0·991 | 23 (39·7%) | 35 (60·3%) | 0·208 | |
| Performed: ground glass opacity | 57 (71·3%) | 23 (28·7%) | 0·310 | 31 (39·2%) | 48 (60·8%) | 0·119 | |
| Performed: pulmonary infiltration | 27 (67·5%) | 13 (32·5%) | 0·205 | 13 (33·3%) | 26 (66·7%) | 0·068 | |
| Performed: other abnormality | 50 (61·0%) | 32 (39·0%) | 0·0010 | 30 (37·0%) | 51 (63·0%) | 0·046 | |
| SARS-CoV-2 diagnosis | .. | .. | 0·719 | .. | .. | 0·085 | |
| Laboratory confirmed | 727 (76·0%) | 230 (24·0%) | .. | 454 (47·9%) | 493 (52·1%) | .. | |
| Radiological (CT thorax) | 58 (72·5%) | 22 (27·5%) | .. | 29 (36·3%) | 51 (63·7%) | .. | |
| Clinical | 53 (77·9%) | 15 (22·1%) | .. | 36 (52·9%) | 32 (47·1%) | .. | |
| Missing | 7 | 1 | .. | 7 | 1 | .. | |
| Timing of SARS-CoV-2 diagnosis | .. | .. | 0·128 | .. | .. | 0·155 | |
| Preoperative | 231 (78·8%) | 62 (21·2%) | .. | 148 (51·0%) | 142 (49·0%) | .. | |
| Postoperative | 595 (74·4%) | 205 (25·6%) | .. | 367 (46·2%) | 428 (53·8%) | .. | |
| Missing | 19 | 1 | .. | 11 | 7 | .. | |
Data only presented for patients with 30-day mortality outcome available (n=1113) and pulmonary complications outcome available (n=1103). Percentages are presented in rows. SARS-CoV-2=severe acute respiratory syndrome coronavirus 2.
*
Last available blood test results from before surgery, presented as mean with SD.