Table 2 Duration of Registry Participation as a Predictor of Care
|  | Univariate Analysis | Multivariable Analysis‡ | ||||||
|---|---|---|---|---|---|---|---|---|
Quality Measure | Year 1 (n = 7879) N (%) | Year 2 (n = 5734) N (%) | Year 3 (n = 2313) N (%) | Year 4 (n = 375) N (%) | P value* | OR§ | 95% CI | P value* |
Optimal Treatment (those who received therapy or had valid contraindication) | ||||||||
   Antithrombotic therapy within 48 hours | 7244 (91.9) | 5365 (93.6) | 2214 (95.7) | 358 (95.5) | 0.001 | 1.11 | (1.04–1.20) | 0.003 |
   DVT prophylaxis within 48 hours†| 4607 (76.4) | 3595 (85.0) | 1596 (92.7) | 269 (94.7) | 0.01 | 1.19 | (1.02–1.40) | 0.03 |
   Antithrombotic medication at discharge** | 6502 (86.8) | 5146 (94.5) | 2148 (96.5) | 355 (98.1) | <0.0001 | 1.46 | (1.24–1.71) | <0.0001 |
Actual Treatment (those who actually received therapy) | ||||||||
   Antithrombotic therapy within 48 hours | 7154 (90.8) | 5284 (92.2) | 2174 (94.0) | 349 (93.1) | 0.03 | 1.06 | (0.99–1.14) | 0.08 |
   DVT prophylaxis within 48 hours†| 2516 (41.7) | 2015 (47.7) | 923 (53.6) | 169 (59.5) | 0.85 | 0.94 | (0.75–1.18) | 0.62 |
   Antithrombotic medication at discharge** | 6236 (83.2) | 4877 (89.6) | 2026 (91.0) | 332 (91.7) | 0.003 | 1.20 | (1.06–1.36) | 0.005 |