Table 5.
Univariate and multivariable analysis of risk factors for PBSI
| Characteristic | n/N (%) | Univariate Analysis Crude OR (95% CI) |
P-value | Multivariable Analysis Adjusted OR (95% CI) |
P-value |
|---|---|---|---|---|---|
| Age (per 10 years increase) | 259 / 19,906 (1.29) | 1.43 (1.31–1.56) | < 0.001 | 1.20 (1.07–1.34) | 0.001 |
| Surgical Duration (per 30 min increase) | 259 / 19,906 (1.29) | 1.02 (1.01–1.04) | 0.012 | 1.01 (1.00-1.02) | 0.024 |
| Intraoperative Blood Loss (per 100mL increase) | 259 / 19,906 (1.29) | 1.25 (1.18–1.31) | < 0.001 | 1.18 (1.12–1.24) | < 0.001 |
| ASA Score | |||||
| I/II | 205 / 17,435 (1.17) | Ref | - | Ref | - |
| III/IV/V | 54 / 2,471 (2.18) | 1.89 (1.38–2.53) | < 0.001 | 1.20 (0.85–1.66) | 0.294 |
| Diabetes | |||||
| No | 240 / 19,074 (1.25) | Ref | - | Ref | - |
| Yes | 19 / 832 (2.28) | 1.84 (1.11–2.87) | 0.011 | 1.05 (0.62–1.70) | 0.836 |
| Hypertension | |||||
| No | 223 / 17,826 (1.25) | Ref | - | Ref | - |
| Yes | 36 / 2,080 (1.73) | 1.40 (0.96–1.96) | 0.065 | 0.72 (0.48–1.06) | 0.105 |
| Vaginal Preparation | |||||
| No | 214 / 16,843 (1.26) | Ref | - | Ref | - |
| Yes | 45 / 3,063 (1.47) | 1.16 (0.83–1.59) | 0.358 | 0.86 (0.61–1.19) | 0.379 |
| Antibiotic Prophylaxis | |||||
| No | 55 / 7,939 (0.69) | Ref | - | Ref | - |
| Yes | 204 / 11,967 (1.70) | 2.47 (1.85–3.37) | < 0.001 | 1.68 (1.24–2.32) | 0.001 |
| Combined high risk Surgery | |||||
| No | 242 / 19,542 (1.24) | Ref | - | Ref | - |
| Yes | 17 /364 (3.47) | 5.12 (3.99–6.58) | < 0.001 | 3.72 (2.84–4.89) | < 0.001 |
| Season of Surgery | |||||
| Q1 | 44 / 4,970 (0.89) | Ref | - | Ref | - |
| Q2 | 61 / 5,382 (1.13) | 1.28 (0.87–1.91) | 0.209 | 1.29 (0.87–1.93) | 0.205 |
| Q3 | 91 / 5,249 (1.71) | 1.95 (1.37–2.83) | < 0.001 | 2.03 (1.41–2.96) | < 0.001 |
| Q4 | 63 / 4,305 (1.46) | 1.66 (1.13–2.46) | 0.010 | 1.67 (1.12–2.51) | 0.012 |
Abbreviations: OR, Odds Ratio; CI, Confidence Interval; ASA, American Society of Anesthesiologists