Baseline characteristics of China National Stroke Registry patients by stroke type
| Total (n=14 244) | IS (n=9787) | ICH (n=3828) | SAH (n=629) | |
| Age (years; %) | ||||
| <45 | 11.1 | 8.7 | 15.5 | 21.8 |
| 46–55 | 20.3 | 18.3 | 23.8 | 29.7 |
| 56–65 | 24.6 | 24.6 | 24.7 | 25.1 |
| 66–75 | 26.0 | 28.1 | 22.2 | 16.5 |
| >75 | 18.0 | 20.4 | 13.8 | 6.8 |
| Mean (SD) | 62.5 (13.3) | 64.0 (13.0) | 59.9 (13.6) | 55.9 (12.8) |
| Gender (%) | ||||
| Male | 60.6 | 61.2 | 61.7 | 43.1 |
| Education (%) | ||||
| Elementary or below | 45.3 | 44.8 | 47.1 | 42.9 |
| Middle school | 27.1 | 26.3 | 28.5 | 30.5 |
| High school or above | 27.6 | 28.9 | 24.4 | 26.6 |
| Health insurance (%) | 76.4 | 78.1 | 72.9 | 70.9 |
| Smoking (%) | ||||
| Never | 60.1 | 59.3 | 60.5 | 69.2 |
| Ex | 10.3 | 10.6 | 10.5 | 5.2 |
| Current | 29.6 | 30.1 | 29.0 | 25.6 |
| Alcohol (%) | ||||
| Never | 66.1 | 66.7 | 63.5 | 72.4 |
| Ex | 3.0 | 3.4 | 2.3 | 0.8 |
| Current | 31.0 | 30.0 | 34.3 | 26.8 |
| BMI (kg/m2)* (%) | ||||
| <18.5 | 3.7 | 3.3 | 4.7 | 4.3 |
| 18.6–24.9 | 51.1 | 50.6 | 52.2 | 52.2 |
| 25.0–29.9 | 28.1 | 29.2 | 26.4 | 22.3 |
| ≥30 | 4.8 | 4.8 | 4.9 | 3.8 |
| Unknown | 12.3 | 12.2 | 11.8 | 17.5 |
| Prior disease history (%) | ||||
| Hypertension | 57.9 | 57.2 | 62.7 | 39.9 |
| Diabetes mellitus | 14.8 | 18.3 | 7.3 | 6.7 |
| Hyperlipidaemia | 7.3 | 8.3 | 5.2 | 4.8 |
| TIA | 1.5 | 2.1 | 0.4 | 0.5 |
| Cardiovascular diseases | 14.3 | 17.8 | 6.9 | 5.1 |
| Hospital rank (%) | ||||
| Tier III | 77.2 | 77.8 | 74.3 | 83.6 |
| Tier II | 22.8 | 22.2 | 25.7 | 16.4 |
| Medication before admission (%) | ||||
| Antithrombotics | 8.6 | 10.2 | 5.1 | 5.3 |
| Antihypertensive medicines | 38.1 | 39.6 | 36.9 | 23.2 |
| Diabetes medicines | 11.0 | 13.9 | 4.6 | 4.1 |
| Lipid-lowing medicines | 1.4 | 1.8 | 0.6 | 0.6 |
*Measured or self-reported.
BMI, body mass index; ICH, intracerebral haemorrhage; IS, ischaemic stroke; SAH, subarachnoid haemorrhage; TIA, transient ischaemic attacks.