Table 4. Cox regression analysis the effect of prestroke aspirin use on early neurological deterioration.
| Factor | HR | 95% CI | P value |
|---|---|---|---|
| Age | 0.73 | 0.67–1.28 | 0.624 |
| Diabetes mellitus | 1.82 | 1.03–4.12 | 0.026 |
| Hypertension | 1.36 | 0.94–2.68 | 0.585 |
| Hemoglobin A1C | 1.48 | 0.98–3.27 | 0.108 |
| Previous statins | 0.78 | 0.72–1.45 | 0.327 |
| Hyperlipidemia | 1.01 | 0.66–1.62 | 0.488 |
| NIHSS scores on admission | 0.99 | 0.87–1.57 | 0.536 |
| Stroke subtype | 0.69 | 0.62–1.36 | 0.134 |
| Thrombolysis | 1.01 | 0.87–2.15 | 0.235 |
| Prestroke aspirin | 0.78 | 0.72–0.92 | 0.002 |
NIHSS, National Institutes of Health Stroke Scale; HR, hazard ratio; CI, confidence interval.
HR for continuous variables means per 1-Standard Deviation increase.