Table 2.
Multivariable logistic regression models for absence of early prophylaxis (model A) and in-hospital DVT (model B).
| Variable | Model A (Outcome: No early prophylaxis) | Model B (Outcome: In-hospital DVT) | ||
|---|---|---|---|---|
| Adjusted OR (95% CI) | P | Adjusted OR (95% CI) | P | |
| Absence of early prophylaxis (vs. received) | – | – | 3.16 (1.19–8.42) | 0.021 |
| Age (per 10-year increase) | 1.25 (0.98–1.60) | 0.072 | 1.08 (0.75–1.56) | 0.683 |
| Atrial fibrillation | 2.98 (1.45–6.12) | 0.003 | 3.39 (1.22–9.41) | 0.019 |
| Pre-thrombolysis NIHSS (per 1-point) | 1.15 (1.07–1.23) | <0.001 | 1.20 (1.07–1.35) | 0.003 |
| Absolute bed rest >3 days | 1.88 (0.88–4.02) | 0.102 | 7.46 (2.40–23.21) | <0.001 |
| D-dimer ≥2.0 mg/L | 4.23 (1.58–11.32) | 0.004 | 5.21 (1.78–15.28) | 0.003 |
| Fibrinogen (per 1 g/L) | 1.12 (0.82–1.52) | 0.48 | 1.08 (0.68–1.70) | 0.751 |
| hs-CRP (per 1 mg/L) | 1.02 (0.98–1.06) | 0.322 | 1.03 (0.98–1.09) | 0.228 |
| Use of IPC | 0.68 (0.35–1.32) | 0.251 | 0.61 (0.22–1.70) | 0.344 |
Model A includes all variables with P < 0.10 in Table 1 comparison between prophylaxis groups. Model B includes the same covariates plus the exposure of interest (absence of early prophylaxis). ORs are adjusted for all variables listed. IPC, intermittent pneumatic compression.