Table 1. Comparison of Patient Baseline Characteristics Between the HNSR and BSR Cohort Which Was Initially Used to Introduce the A2DS2 Score.
| Characteristic | HNSR Cohort | BSR Cohort |
| (n = 1142) | (n = 15335) | |
| Age, y | ||
| Mean(SD) | 60.3±13.1 | 71.2±13.1 |
| Median(IQR) | 61(51–70) | 72(64–81) |
| Age group, no.(%), y | ||
| ≤64 | 692(60.6) | 4006(26.1) |
| 65–74 | 285(25.0) | 4659(30.6) |
| 75–84 | 140(12.3) | 4311(28.1) |
| ≥85 | 25(2.2) | 2323(15.1) |
| Male sex, no.(%) | 723(63.3) | 7759(50.6) |
| Stroke severity, NIHSS | ||
| Median(IQR) | 4(1–7) | 4(2–10) |
| NIHSS categories, no.(%) | ||
| 0–4 | 654(57.3) | 6290(50.4) |
| 5–15 | 420(36.8) | 5098(37.1) |
| 16+ | 68(6.0) | 1707(12.4) |
| Dysphagia, no.(%) | 217(19.0) | 3505(22.9) |
| Comorbidities, no.(%) | ||
| Hypertension | 673(58.9) | 11358(85.9) |
| Diabetes mellitus | 267(23.4) | 4783(31.2) |
| Atrial fibrillation | 51(4.5) | 4139(27.0) |
| Previous stroke | 299(26.2) | 4320(28.2) |
| Length of stay, d | ||
| Mean(SD) | 15.7(9.3) | 9.2(7.3) |
| Median(IQR) | 14.0(10–18) | 8.0(5–11) |
| Pneumonia, no.(%) | 215(18.8%) | 7.2% |
HNSR, Henan Province Stroke Registry; BSR, Berlin Stroke Registry; SD, standard deviation; IQR, interquartile range; NIHSS, National Institutes of Health Stroke Scale.