Table 1.
Characteristics of the study Population.
| Variable | |
|---|---|
| Patients, N | 109,530 |
| Age, median (IQR) | 76 (68, 83) |
| Female sex, N (%) | 54 250 (49) |
| NIHSS score at admission* | |
| ≤ 3, N (%) | 39 202 (43) |
| median (mean) | 2 (1.6) |
| 4–9, N (%) | 30 135 (33) |
| median (mean) | 6 (5.8) |
| ≥10, N (%) | 22 527 (25) |
| median (mean) | 16 (16.8) |
| Median onset to door-time in minutes (mean) | |
| NIHSS score ≤3 | 503 (1,348) |
| NIHSS score 4–9 | 389 (1,045) |
| NIHSS score ≥10 | 246 (723) |
| NIHSS scores missing | 630 (1,553) |
| Level of care | |
| Stroke center, N (%) | 26 794 (24) |
| Regional SU, N (%) | 19 723 (18) |
| Local SU, N (%) | 40 864 (37) |
| No SU, N (%) | 22 149 (20) |
*
The NIHSS score at admission was missing for N = 17,666 patients or 16% of the study population. Abbreviations: IQR, interquartile range; NIHSS, National Institutes of Health Stroke Scale; SU, stroke unit.