Table 4.
Multivariable analysis investigating clinical and geographical predictors of postoperative medical complications and postoperative respiratory symptoms
| Covariates | Postoperative medical complications | Postoperative respiratory symptoms | ||||
|---|---|---|---|---|---|---|
| HR | 95% CI | p value | HR | 95% CI | p value | |
| Age at surgery | 0.99 | 0.96–1.04 | 0.85 | 1.02 | 0.97–1.08 | 0.12 |
| Gender Male Female |
3.94 ref |
0.52–12.16 ref |
0.38 ref |
2.14 ref |
0.72–5.69 ref |
0.15 ref |
| BMI | 1.01 | 0.95–1.08 | 0.77 | – | – | – |
| Charlson Comorbidity Index | 1.14 | 1.01–1.12 | 0.02 | 1.06 | 1.01–1.23 | 0.01 |
| Risk hospital area High Medium Low |
2.87 1.83 ref |
1.94–4.27 0.98–2.64 ref |
0.03 0.10 ref |
3.82 2.22 ref |
0.97–4.14 1.16–5.57 ref |
0.14 0.29 ref |
| Patients’ geographic provenance from ‘COVID-19 red zones’ Yes No |
1.43 ref |
1.18–6.22 ref |
0.42 ref |
0.76 ref |
0.10–6.34 ref |
0.80 ref |
| COVID-19-free facility Yes No |
0.74 ref |
0.22–1.23 ref |
0.21 ref |
0.23 ref |
0.07–0.79 ref |
0.02 ref |
| Number of patients hospitalized in the same facility | 1.65 | 0.67–4.01 | 0.28 | 1.12 | 1.00–1–05 | 0.047 |
| Nasopharyngeal swab before admission No Yes |
2.30 ref |
1.01–5.19 ref |
0.04 ref |
– – |
– – |
– – |
| Type of pathology treated Neoplastic Benign |
1.16 ref |
0.19–7.09 ref |
0.22 ref |
0.90 ref |
0.27–2.98 ref |
0.87 ref |
CI – confidence interval; BMI – body mass index