Table 1.
Characteristics of the Study Cohorts
| CYCH (n=3847) | NTUH (n=2668) | P value | |
|---|---|---|---|
| Age, mean (SD) | 69.5 (12.3) | 69.8 (13.9) | 0.528 |
| Female | 1583 (41.1) | 1118 (41.9) | 0.543 |
| Hypertension | 3098 (80.5) | 2090 (78.3) | 0.031 |
| Diabetes | 1602 (41.6) | 1024 (38.4) | 0.008 |
| Hyperlipidemia | 2195 (57.1) | 1369 (51.3) | <0.001 |
| Atrial fibrillation | 684 (17.8) | 790 (29.6) | <0.001 |
| Congestive heart failure | 196 (5.1) | 223 (8.4) | <0.001 |
| Cancer | 249 (6.5) | 424 (15.9) | <0.001 |
| Preadmission dependence (mRS >2) | 419 (10.9) | 407 (15.3) | <0.001 |
| Onset‐to‐admission delay >3 h | 2763 (71.8) | 1913 (71.7) | 0.915 |
| NIHSS, median (IQR) | 5 (3–10) | 5 (2–13) | 0.267 |
| Glucose, mean (SD), mg/dL | 163.2 (82.6) | 146.8 (67.7) | <0.001 |
| PLAN score, median (IQR) | 8 (6–12) | 9 (7–12) | 0.001 |
| ASTRAL score, median (IQR) | 21 (18–27) | 22 (18–30) | 0.178 |
| Word count in HPI, median (IQR) | 132 (109–161) | 268 (209–342) | <0.001 |
| BERT tokens in HPI, median (IQR) | 192 (156–240) | 420 (329–535) | <0.001 |
| Word count in CT reports, median (IQR) | 127 (93–189) | 42 (34–52) | <0.001 |
| BERT tokens in CT reports, median (IQR) | 225 (164–351) | 86 (68–106) | <0.001 |
| Poor outcome (mRS >2) | 1674 (43.5) | 1118 (41.9) | 0.196 |
Data are expressed in number (percentage) unless specified otherwise. ASTRAL indicates Acute Stroke Registry and Analysis of Lausanne; BERT, bidirectional encoder representations from transformers; CT, computed tomography; CYCH, Chia‐Yi Christian Hospital; HPI, history of present illness; IQR, interquartile range; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale; NTUH, National Taiwan University Hospital; and PLAN, preadmission comorbidities, level of consciousness, age, and neurological deficit.