Table 5 Postoperative complications based on the length of the smoking cessation period before surgery
Variables | Non-smokers (n = 1413) | Smokers (n = 1056) | P value | ||
|---|---|---|---|---|---|
≤ 2 weeks (n = 823) | 2 to 4 weeks (n = 40) | ≥ 4 weeks (n = 193) | |||
Complicationsa | 143 (10.1%) | 115 (14.0%) | 6 (15.0%) | 29 (15.0%) | 0.020 |
Surgical site infection | 59 (4.2%) | 43 (5.2%) | 0 | 14 (7.3%) | 0.104 |
Pulmonary complication | 46 (3.3%) | 44 (5.3%) | 4 (10.0%) | 6 (3.1%) | 0.019 |
Bleeding | 12 (0.8%) | 8 (1.0%) | 0 | 4 (2.1%) | 0.385 |
Others | 26 (1.8%) | 20 (2.4%) | 2 (5.0%) | 5 (2.6%) | 0.444 |
Severity of complicationsb | 0.040 | ||||
Minor (grade II) | 104 (7.4%) | 80 (9.7%) | 5 (12.5%) | 17 (8.8%) | |
Major (grade III or greater) | 39 (2.8%) | 35 (4.3%) | 1 (2.5%) | 12 (6.2%) | |