Comparison of clinical and treatment characteristics before and after propensity score matchinga
| Before Propensity Score Matching | After Propensity Score Matching | |||||
|---|---|---|---|---|---|---|
| ERIC (n = 59) | Non-ERIC (n = 257) | P Value | ERIC (n = 57) | Non-ERIC (n = 57) | P Value | |
| Age (yr) | 70.0 | 68.4 | .41 | 69.7 | 70.1 | .87 |
| Sex (male) | 29 (49%) | 145 (56%) | .31 | 29 (51%) | 31 (54%) | .85 |
| CCI 0 | 27 (46%) | 131 (51%) | .44 | 27 (47%) | 28 (49%) | .50 |
| CCI 1–3 | 26 (44%) | 111 (43%) | 25 (44%) | 27 (47%) | ||
| CCI ≥4 | 6 (10%) | 15 (6%) | 5 (9%) | 2 (4%) | ||
| Known atrial fibrillation | 15 (25%) | 69 (27%) | .87 | 14 (25%) | 17 (30%) | .67 |
| IV rtPA | 39 (66%) | 184 (72%) | .43 | 38 (67%) | 41 (72%) | .69 |
| Clot location | ||||||
| ICA-T | 22 (37%) | 61 (24%) | <.0001 | 22 (39%) | 22 (39%) | .63 |
| M1 | 19 (32%) | 158 (61%) | 17 (30%) | 21 (37%) | ||
| M2 | 13 (22%) | 34 (13%) | 13 (23%) | 12 (21%) | ||
| Other | 5 (8%) | 4 (2%) | Other: 5 (8%) | 2 (3%) | ||
| NIHSS | 17.4 | 16.8 | .36 | 17.4 | 17.5 | .91 |
| Extracranial carotid stenting | 13 (22%) | 51 (20%) | .72 | 13 (23%) | 10 (18%) | .64 |
| Onset to image (min) | 92.3 | 99.0 | .51 | 92.6 | 98.7 | .65 |
| Image to groin (min) | 167.0 | 145.3 | .04 | 167.0 | 150.5 | .20 |
| General anesthesia | 34 (58%) | 171 (67%) | .23 | 33 (58%) | 32 (56%) | 1.00 |
| Neurointerventionalist | ||||||
| 1 | 38 (64%) | 53 (21%) | <.0001 | 36 (63%) | 28 (49%) | .51 |
| 2 | 15 (25%) | 45 (18%) | 15 (26%) | 20 (35%) | ||
| 3 | 4 (7%) | 59 (23%) | 4 (7%) | 6 (11%) | ||
| 4 | 0 (0%) | 42 (16%) | 0 (0%) | 0 (0%) | ||
| 5 | 2 (3%) | 58 (23%) | 2 (4%) | 3 (5%) | ||
Note:—CCI indicates Charlson comorbidity index.
↵a Data are No. (%) unless otherwise indicated.