Univariate analysis of risk factors for recurrent thrombosis
| Thrombotic risk factor . | Odds ratio (95% CI) . | P value . |
|---|---|---|
| IBD | 3.37 (1.3-8.60) | .01 |
| Central line causing thrombosis (at first thrombosis) | 1.73 (1.10-2.73) | .02 |
| IF | 2.85 (1.20-6.72) | .02 |
| Anatomic venous abnormality | 1.72 (0.94-3.14) | .08 |
| In the hospital at the time of thrombosis | 1.46 (0.91-2.34) | .11 |
| Congenital thrombophilia | 1.80 (0.84-3.86) | .13 |
| Cancer at the time of thrombosis | 1.41 (0.74-2.68) | .30 |
| Surgery (within 6 weeks of thrombotic event) | 1.33 (0.77-2.32) | .30 |
| Infection | 1.24 (0.71-2.19) | .45 |
| No identified risk factor | 1.24 (0.59-2.63) | .57 |
| Antiphospholipid syndrome | 1.60 (0.20-12.62) | .66 |
| Systemic lupus erythematosus | 1.26 (0.16-10.23) | .83 |
| Number of comorbidities (mean, SD) | NA | .36 |
| Thrombotic risk factor . | Odds ratio (95% CI) . | P value . |
|---|---|---|
| IBD | 3.37 (1.3-8.60) | .01 |
| Central line causing thrombosis (at first thrombosis) | 1.73 (1.10-2.73) | .02 |
| IF | 2.85 (1.20-6.72) | .02 |
| Anatomic venous abnormality | 1.72 (0.94-3.14) | .08 |
| In the hospital at the time of thrombosis | 1.46 (0.91-2.34) | .11 |
| Congenital thrombophilia | 1.80 (0.84-3.86) | .13 |
| Cancer at the time of thrombosis | 1.41 (0.74-2.68) | .30 |
| Surgery (within 6 weeks of thrombotic event) | 1.33 (0.77-2.32) | .30 |
| Infection | 1.24 (0.71-2.19) | .45 |
| No identified risk factor | 1.24 (0.59-2.63) | .57 |
| Antiphospholipid syndrome | 1.60 (0.20-12.62) | .66 |
| Systemic lupus erythematosus | 1.26 (0.16-10.23) | .83 |
| Number of comorbidities (mean, SD) | NA | .36 |
Patients who experienced only 1 instance of thrombosis (n = 546) are compared to patients who had multiple occurrences (n = 86).
CI, confidence interval; NA, not applicable; SD, standard deviation.