Table 4.
Intravenous Thrombolysis Rate Ratios (Relative to Baseline Time Point) and 95% CIs for Intervention and Control Hospitals Over Intervention Time Period
| Intervention | Postintervention | ||||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 1 | 2 | 3 | |
| Intervention | 1.442 | 1.619 | 1.611 | 1.923 | 2.016 | 1.35 | 1.482 |
| (1.103, 1.884) | (1.264, 2.074) | (1.257, 2.064) | (1.534, 2.411) | (1.618, 2.511) | (1.043, 1.746) | (1.15, 1.91) | |
| Control | 1.548 | 1.599 | 1.515 | 1.197 | 1.386 | 1.186 | 1.344 |
| (1.205, 1.988) | (1.244, 2.056) | (1.188, 1.932) | (0.903, 1.585) | (1.069, 1.797) | (0.917, 1.535) | (1.057, 1.71) | |
| Ratio (intervention/ control) | 0.931 | 1.012 | 1.063 | 1.607 | 1.454 | 1.138 | 1.103 |
| (0.646, 1.343) | (0.711, 1.44) | (0.751, 1.505) | (1.12, 2.306) | (1.035, 2.043) | (0.79, 1.637) | (0.777, 1.564) | |
An omnibus test suggested that there was negligible support for an interaction term, P=0.516.