Table 1 Pairwise correlation (Pearson’s rho) among the six baseline covariates used in the minimal sufficient balance randomization procedure
Age (years) | Sex | NIHSS score | ASPECTS score | Occlusion location | Alteplase (tPA) | |
|---|---|---|---|---|---|---|
Continuous variable | Binary variable (male/female) | Continuous integer variable (score from 6 to 42) | Binary variable (good score 8–10 vs. moderate score 6–7) | Binary variable (MCA vs. ICA) | Binary variable (true/false) | |
Age | 1.000 | |||||
Sex | 0.1587 | 1.000 | ||||
NIHSS score | 0.2125 | −0.0141 | 1.000 | |||
ASPECTS score | 0.1125 | 0.0330 | −0.1474 | 1.000 | ||
Occlusion location | 0.0660 | 0.0144 | − 0.2398 | 0.0276 | 1.000 | |
Alteplase (tPA) | − 0.0394 | − 0.0610 | 0.0022 | 0.0274 | − 0.0133 | 1.000 |