Variable | No. of studies | Estimates and 95% CI | P value | I2 (%) | P value for within-group heterogeneity | P value for between-group heterogeneitya |
---|---|---|---|---|---|---|
All stroke | 20 | 0.84 (0.76, 0.92) | < 0.001 | 41.7 | 0.027 | 0.066 |
 ACS | 16 | 0.89 (0.79, 0.99) | 0.033 | 32.3 | 0.104 |  |
 Non-ACS | 4 | 0.73 (0.63, 0.85) | < 0.001 | 35.0 | 0.202 |  |
Ischemic stroke | 14 | 0.78 (0.67, 0.89) | < 0.001 | 55.8 | 0.006 | 0.440 |
 ACS | 11 | 0.81 (0.68, 0.96) | 0.015 | 52.3 | 0.021 |  |
 Non-ACS | 3 | 0.70 (0.54, 0.91) | 0.008 | 71.5 | 0.030 |  |
Hemorrhagic stroke | 7 | 1.51 (1.00, 2.27) | 0.048 | 22.8 | 0.255 | 0.999 |
 ACS | 6 | 1.49 (0.90, 2.48) | 0.123 | 35.6 | 0.170 |  |
 Non-ACS | 1 | 1.50 (0.67, 3.33) | 0.324 | – | – |  |
Intracranial hemorrhage | 15 | 1.41 (1.11, 1.79) | 0.005 | 48.1 | 0.019 | 0.517 |
 ACS | 12 | 1.51 (1.10, 2.09) | 0.012 | 54.9 | 0.011 |  |
 Non-ACS | 3 | 1.27 (0.98, 1.66) | 0.076 | 0.60 | 0.366 |  |