Cohort characteristics after inverse proportional weighting
| Characteristic | % of patients* | % of patients* | % of patients* | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre-SSIB/pre-ERAS | Post-SSIB/pre-ERAS | Std. Δ, %† | p value | Post-SSIB/pre-ERAS | Post-SSIB/post- ERAS | Std. Δ, %† | p value | Pre-SSIB/pre-ERAS | Post-SSIB/post-ERAS | Std. Δ, %† | p value | |
| Age, yr, mean ± SD | 69.5 ± 1.4 | 71.2 ± 1.3 | 6.0 | 0.7 | 68.5 ± 1.2 | 67.9 ± 1.0 | 1.3 | 0.9 | 70.0 ± 1.3 | 70.6 ± 1.0 | 6.4 | 0.6 |
| Body mass index, mean ± SD | 27.9 ± 0.7 | 28.1 ± 0.7 | 2.4 | 0.9 | 28.2 ± 0.6 | 28.0 ± 0.4 | 0.4 | 1.0 | 28.2 ± 0.7 | 28.0 ± 0.4 | 7.2 | 0.6 |
| Sex | 0.2 | 1.0 | 5.8 | 0.8 | 1.4 | 0.9 | ||||||
| Male | 43.3 | 43.2 | 44.3 | 45.5 | 44.2 | 43.4 | ||||||
| Female | 56.7 | 56.8 | 55.7 | 54.5 | 55.8 | 56.6 | ||||||
| American Society of Anesthesiologists class | 10.7 | 1.0 | 0.8 | 1.0 | 4.8 | 0.7 | ||||||
| 1–2 | 40.5 | 40.0 | 48.5 | 48.5 | 43.7 | 41.0 | ||||||
| 3–4 | 59.5 | 59.9 | 51.5 | 51.5 | 56.3 | 59.0 | ||||||
| Wound classification | 15.5 | 0.9 | 0.9 | 1.0 | 14.7 | 0.9 | ||||||
| Clean/contaminated | 77.0 | 75.2 | 84.8 | 84.7 | 77.6 | 76.3 | ||||||
| Contaminated | 14.8 | 14.5 | 11.0 | 11.0 | 14.9 | 14.7 | ||||||
| Dirty/infected | 8.2 | 10.3 | 4.2 | 4.3 | 7.5 | 9.0 | ||||||
| Laparoscopic procedure | 9.7 | 0.8 | 0.7 | 0.9 | 11.2 | 0.7 | ||||||
| Yes | 87.1 | 85.4 | 93.0 | 92.7 | 89.2 | 87.4 | ||||||
| No | 12.9 | 14.6 | 7.0 | 7.3 | 10.8 | 12.6 | ||||||
| Diabetes | 3.0 | 0.9 | 3.3 | 0.8 | 1.9 | 0.8 | ||||||
| Yes | 10.6 | 10.1 | 14.8 | 13.6 | 14.4 | 13.3 | ||||||
| No | 89.4 | 89.9 | 85.2 | 86.4 | 85.6 | 86.7 | ||||||
| Chronic obstructive pulmonary disease | 0.3 | 1.0 | 9.2 | 0.5 | 10.9 | 0.2 | ||||||
| Yes | 7.1 | 7.2 | 7.1 | 9.4 | 7.1 | 11.7 | ||||||
| No | 92.9 | 92.8 | 92.9 | 90.6 | 92.9 | 88.3 | ||||||
| Functional status | 10.8 | 0.6 | 14.6 | 0.2 | 3.1 | 0.8 | ||||||
| Independent | 99.0 | 97.6 | 96.5 | 98.8 | 99.1 | 98.8 | ||||||
| Partially/totally dependent | 1.0 | 1.2 | 3.5 | 1.2 | 0.9 | 1.2 | ||||||
| Chemotherapy | 2.4 | 0.9 | 4.7 | 0.1 | 4.0 | 0.8 | ||||||
| Yes | 5.5 | 4.9 | 4.0 | 5.0 | 6.2 | 5.4 | ||||||
| No | 94.5 | 95.1 | 96.0 | 95.0 | 93.8 | 94.6 | ||||||