Table 2.
Multivariate Analysis Results of Risk of Postoperative Complications
| Parameter | Estimate | OR (95% CI) | SE | Z Value | P Value |
|---|---|---|---|---|---|
| Week of study | −0.143 | 0.87 (0.70-1.08) | 0.11 | −1.301 | .193 |
| Patient age | 0.038 | 1.04 (0.99-1.09) | 0.026 | 1.478 | .140 |
| BMI | −0.033 | 0.97 (0.89-1.05) | 0.042 | −0.801 | .423 |
| Comorbidities | 0.670 | 1.95 (1.05-3.65) | 0.318 | 2.104 | .035 |
| ASA classification | 0.405 | 1.50 (0.53-4.26) | 0.533 | 0.760 | .448 |
| T stage | −0.190 | 0.83 (0.40-1.70) | 0.369 | −0.516 | .606 |
| N stage | −0.310 | 0.73 (0.26-2.07) | 0.529 | −0.586 | .558 |
| Type of surgery | |||||
| BCT | NA | 1.00 (reference) | NA | NA | NA |
| Mastectomy | 1.318 | 3.73 (1.14-12.23) | 0.605 | 2.177 | .030 |
| Other | 0.583 | 1.79 (0.15-21.74) | 1.273 | 0.458 | .647 |
| Neoadjuvant therapy | 0.625 | 1.87 (0.50-7.02) | 0.675 | 0.926 | .355 |
| COVID-19 symptoms | 0.070 | 1.07 (0.29-3.90) | 0.659 | 0.106 | .916 |
Abbreviations: ASA = American Society of Anesthesiologists; BCT = breast-conserving therapy; BMI = body mass index; CI = confidence interval; COVID-19 = coronavirus disease 2019; OR = odds ratio, NA = not applicable; SE = standard error.