Table 4.
Characteristics and outcomes of patients receiving intra-arterial treatment for stroke based on procedural volume per hospital (Paul Coverdell National Acute Stroke Program, 2008–2018)
| N (%) or statistics by volume per site | ||||
|---|---|---|---|---|
| overall N (%) or statistics (n=17 985) | <15 (n=2222) | 15–30 (n=2860) | >30 (n=12 903) | |
| Mean age, years (SE) | 68.5 (0.1) | 66.4 (0.3) | 67.6 (0.3) | 69.0 (0.1) |
| No of women (%) | 8867 (49.3) | 1063 (47.8) | 1380 (48.3) | 6424 (49.8) |
| Race, n (%) | ||||
| Non-Hispanic White | 12 850 (71.4) | 1582 (71.2) | 2150 (75.2) | 9118 (70.7) |
| Non-Hispanic Black | 2687 (14.9) | 372 (16.7) | 369 (12.9) | 1946 (15.1) |
| Other race | 2448 (13.6) | 268 (12.1) | 341 (11.9) | 1839 (14.3) |
| Arrival by ambulance | 8566 (47.6) | 1344 (60.5) | 1469 (51.4) | 5753 (44.6) |
| NIHSS score recorded, n (%) | 17 276 (96.1) | 1982 (89.2) | 2685 (93.9) | 12 609 (97.7) |
| Median NIHSS score (IQR) | 16 (9–21) | 16 (10–21) | 16 (10–21) | 15 (9–21) |
| Discharge to home | 4772 (26.5) | 451 (20.3) | 711 (24.9) | 3610 (28.0) |
| In-hospital mortality | 2321 (12.9) | 347 (15.6) | 391 (13.7) | 1583 (12.3) |
| Symptomatic ICH | 864 (4.8) | 133 (6.0) | 134 (4.7) | 597 (4.6) |
| Life-threatening complications | 133 (0.7) | 24 (1.1) | 25 (0.9) | 84 (0.7) |
ICH, intracranial hemorrhage; NIHSS, National Institutes of Health Stroke Scale.