Table 1.
Comparison of Clinical Characteristics of Survival and Nonsurvival for Patients in the Training Cohort
| Variable | Nonsurvival (n=53) | Survival (n=119) | P value |
|---|---|---|---|
| Demographic characteristics | |||
| Age, median (IQR), y | 75 (64–82) | 67 (59–76) | 0.006 |
| Female sex, n (%) | 18 (34.0) | 40 (33.6) | 0.964 |
| Medical history, n (%) | |||
| Hypertension | 38 (71.7) | 90 (75.6) | 0.585 |
| Arterial fibrillation | 17 (32.1) | 37 (31.1) | 0.898 |
| Diabetes | 11 (20.8) | 24 (20.2) | 0.930 |
| Coronary artery disease | 6 (11.3) | 16 (13.4) | 0.700 |
| Dyslipidemia | 11 (20.8) | 34 (28.6) | 0.282 |
| Previous ischemic stroke | 10 (18.9) | 23 (19.3) | 0.944 |
| History of antiplatelet/anticoagulant use | 20 (37.7) | 37 (31.1) | 0.393 |
| Smoking | 11 (20.8) | 28 (23.5) | 0.688 |
| Clinical data | |||
| Admission SBP, mean±SD, mm Hg | 150.3±26.7 | 152.1±23.5 | 0.667 |
| Baseline NIHSS score, median (IQR) | 30 (17–35) | 18 (13–32) | 0.006 |
| Baseline pc‐ASPECTS, median (IQR) | 7 (7–9) | 9 (8–9) | <0.001 |
| BATMAN score, median (IQR) | 6 (4–7) | 7 (6–8) | <0.001 |
| Prestroke mRS score of 0–1, n (%) | 51 (96.2) | 115 (96.6) | 0.892 |
| White blood cell count, median (IQR), ×109/L | 11.2 (8.0–15.4) | 10.9 (8.5–14.3) | 0.867 |
| Baseline glucose level, median (IQR), mmol/L | 5.9 (5.4–7.2) | 6.0 (5.0–7.4) | 0.997 |
| Cause, n (%) | 0.207 | ||
| Cardioembolism | 19 (35.8) | 45 (37.8) | |
| Large‐artery atherosclerosis | 17 (32.1) | 50 (42.0) | |
| Undetermined cause or others | 17 (32.1) | 24 (20.2) | |
| Occlusion site, n (%) | 0.731 | ||
| Proximal‐middle | 30 (56.6) | 64 (53.8) | |
| Distal | 23 (43.4) | 55 (46.2) | |
| General anesthesia, n (%) | 9 (17.0) | 13 (10.9) | |
| Accepted intravenous thrombolysis, n (%) | 16 (30.2) | 32 (26.9) | 0.656 |
| Rescue treatment, n (%) | 13 (24.5) | 47 (39.5) | 0.057 |
| Successful recanalization, n (%) | 41 (77.4) | 111 (93.3) | 0.003 |
| Passes, median (IQR), n | 1 (1–3) | 1 (1–2) | 0.562 |
| OTP time, median (IQR), min | 300 (236–486) | 297 (190–428) | 0.435 |
| Procedural duration, median (IQR), min | 89 (45–116) | 67 (45–85) | 0.054 |
| Procedural adverse events, n (%) | 5 (9.4) | 9 (7.6) | 0.679 |
| sICH, n (%) | 9 (17.0) | 2 (1.7) | <0.001 |
BATMAN indicates Basilar Artery on Computed Tomography Angiography; IQR, interquartile range; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale; OTP, onset to puncture; pc‐ASPECTS, Posterior Circulation–Alberta Stroke Program Early CT (Computed Tomography) Score; SBP, systolic blood pressure; and sICH, symptomatic intracranial hemorrhage.