Table 3.
Univariate and Multivariate Logistic Regression with Odds Ratio
| 2019 (June 1–September 1), n (%) | 2020 (June 1–September 1), n (%) | Odds Ratio (95% Confidence Interval) | P Value | |
|---|---|---|---|---|
| Total | 533 | 283 | — | — |
| Univariate | ||||
| Trauma | 78 (14.6) | 50 (17.5) | 1.25 (0.849–1.846) | 0.267 |
| Oncology | 86 (16.1) | 49 (17.1) | 1.088 (0.741–1.599) | 0.693 |
| Spine | 261 (48.9) | 134 (47.5) | 0.937 (0.702–1.251) | 0.713 |
| Vascular | 51 (9.6) | 27 (9.6) | 0.997 (0.610–1.628) | 0.990 |
| Congenital | 3 (0.6) | 1 (0.4) | 0.626 (0.065–6.050) | 0.683 |
| Hydrocephalus | 11 (2.1) | 4 (1.4) | 0.680 (0.215–2.115) | 0.510 |
| Infection | 23 (4.3) | 8 (2.9) | 0.645 (0.281–1.461) | 0.290 |
| Others | 10 (1.9) | 4 (1.4) | 0.680 (0.215–2.156) | 0.510 |
| Complications | 10 (1.9) | 6 (2.1) | 1.133 (0.407–3.150) | 0.811 |
| Elective procedures | 380 (71.3) | 168 (59.4) | 0.588 (0.435–0.796) | 0.001∗ |
| Emergency procedures | 153 (28.7) | 115 (40.6) | 1.700 (1.256–2.299) | 0.001∗ |
| Multivariate (adjusted for age and sex) | ||||
| Trauma | — | — | 1.180 (0.790–1.761) | 0.419 |
| Oncology | — | — | 1.092 (0.741–1.609) | 0.658 |
| Spine | — | — | 0.968 (0.723–1.297) | 0.829 |
| Vascular | — | — | 1.032 (0.630–1.962) | 0.900 |
| Congenital | — | — | 0.571 (0.059–5.547) | 0.629 |
| Hydrocephalus | — | — | 0.658 (0.206–2,100) | 0.479 |
| Infection | — | — | 0.666 (0.294–1.512) | 0.331 |
| Others | — | — | 0.653 (0.205–2.078) | 0.471 |
| Complications | — | — | 1.164 (0.418–3.243) | 0.771 |
| Elective procedures | — | — | 0.622 (0.451–0.852) | 0.003∗ |
| Emergency procedures | — | — | 1.607 (1.174–2.217) | 0.003∗ |
∗
Indicates statistically significant (P <0.05).