Meta-regression for the impact of sample size on pooled results
| Risk factors | Exp(b) | SE | t | p>t | 95% CI | Adjusted R2 (%) |
| Age | 1.07 | 0.21 | 0.36 | 0.723 | 0.71 to 1.61 | −28.75 |
| Atrial fibrillation | 1.22 | 0.59 | 0.41 | 0.691 | 0.42 to 3.56 | −53.25 |
| Previous stroke | 1.40 | 0.76 | 0.63 | 0.547 | 0.41 to 4.76 | −50.87 |
| Previous antiplatelet | 1.86 | 0.88 | 1.30 | 0.234 | 0.60 to 5.71 | 0 |
| NIHSS | 1.12 | 0.11 | 1.20 | 0.277 | 0.89 to 1.39 | 0 |
| Systolic pressure | 0.93 | 0.24 | −0.29 | 0.780 | 0.52 to 1.64 | −15.01 |
| Diastolic pressure | 0.99 | 0.25 | −0.05 | 0.959 | 0.56 to 1.75 | −25.21 |
| Serum glucose | 5.64 | 6.12 | 1.59 | 0.155 | 0.43 to 73.43 | 17.55 |
NIHSS, National Institute of Health stroke scale.