Table 2.
Univarate and multivariate analysis of gender, age, and seasons on the risk for CVT
| Variables | Univariate | Multivariate | |||||
|---|---|---|---|---|---|---|---|
| n (%) | RR | 95% CI | P | RR | 95% CI | P | |
| Age | |||||||
| <40 | 673 (69.4) | 1.2 | 1.2-2.1 | 0.004 | 1.5 | 1.1-2.0 | 0.012 |
| 40-49 | 177 (18.2) | 1.2 | 0.8-1.6 | 0.364 | 1.1 | 0.8-1.5 | 0.540 |
| 50-59 | 74 (7.6) | 1.1 | 0.8-1.6 | 0.680 | 1.0 | 0.7-1.5 | 0.882 |
| ≥60 | 46 (4.7) | 1.0 | 1.0 | ||||
| Gender | |||||||
| Female | 394 (40.6) | 1.3 | 1.1-1.5 | <0.001 | 1.2 | 1.1-1.4 | 0.006 |
| Male | 576 (59.4) | 1.0 | |||||
| Season 3 | |||||||
| Summer | 411 (42.3) | 1.1 | 1.0-1.3 | 0.133 | 1.2 | 1.0-1.4 | 0.038 |
| Autumn | 317 (32.7) | 1.1 | 0.9-1.3 | 0.391 | 1.1 | 0.9-1.3 | 0.284 |
| Winter | 242 (25.0) | 1.0 | 1.0 | ||||
CVT=cerebral venous thrombosis