Results from logistic regression analyses, modeling odds of a repeat thrombosis
| Effect . | Reference . | OR (95% CI) . | P value . |
|---|---|---|---|
| Full model | |||
| Anatomic venous abnormality, yes | No | 2.8 (1.37-5.59) | .004 |
| IBD, yes | No | 3.0 (1.14-7.99) | .027 |
| IF, yes | No | 2.2 (0.85-5.45) | .107 |
| CVC, yes | No | 1.5 (0.86-2.61) | .155 |
| Congenital thrombophilia, no | Yes | 1.8 (0.80-3.91) | .161 |
| Hospital at the time of first thrombosis, in | Out | 1.5 (0.82-2.67) | .199 |
| Reduced model | |||
| CVC, yes | No | 2.0 (1.21-3.26) | .006 |
| Anatomic venous abnormality, yes | No | 2.3 (1.22-4.47) | .011 |
| IBD, yes | No | 3.1 (1.18-7.98) | .022 |
| Effect . | Reference . | OR (95% CI) . | P value . |
|---|---|---|---|
| Full model | |||
| Anatomic venous abnormality, yes | No | 2.8 (1.37-5.59) | .004 |
| IBD, yes | No | 3.0 (1.14-7.99) | .027 |
| IF, yes | No | 2.2 (0.85-5.45) | .107 |
| CVC, yes | No | 1.5 (0.86-2.61) | .155 |
| Congenital thrombophilia, no | Yes | 1.8 (0.80-3.91) | .161 |
| Hospital at the time of first thrombosis, in | Out | 1.5 (0.82-2.67) | .199 |
| Reduced model | |||
| CVC, yes | No | 2.0 (1.21-3.26) | .006 |
| Anatomic venous abnormality, yes | No | 2.3 (1.22-4.47) | .011 |
| IBD, yes | No | 3.1 (1.18-7.98) | .022 |
Initial predictors (full model) were included based on univariate results (Table 4). Final model includes only significant predictors after using backward elimination.
CI, confidence interval; OR, odds ratio.