Comparison of characteristics between patients enrolled in the study and those who withdrew from the follow-up
| Variables | Enrolled (n=1062) | Withdrew (n=211) | P value |
| Demographic characteristics | |||
| Age, year, mean±SD | 60.47±11.57 | 60.60±12.90 | 0.88 |
| Female, n (%) | 364 (34.3) | 72 (34.1) | 0.97 |
| Education level | |||
| High school and above, n (%) | 762 (71.8) | 150 (71.1) | 0.85 |
| Married, n (%) | 992 (93.4) | 193 (91.9) | 0.43 |
| Living alone, n (%) | 1037 (97.6) | 204 (96.7) | 0.41 |
| Employed, n (%) | 502 (47.4) | 96 (45.5) | 0.60 |
| Family history of mental disease, n (%) | 187 (18.2) | 40 (19.9) | 0.56 |
| Vascular risk factors | |||
| Smoker, n (%) | 483 (45.7) | 97 (46.2) | 0.90 |
| Hypertension, n (%) | 708 (67.9) | 142 (69.6) | 0.77 |
| Diabetes, n (%) | 225 (21.6) | 39 (18.8) | 0.38 |
| Hyperlipidaemia, n (%) | 178 (19.1) | 40 (22.1) | 0.35 |
| Clinical characteristics | |||
| Diagnosis of ISH, n (%) | 863 (81.3) | 164 (77.7) | 0.24 |
| NIHSS score at 14±2 days, mean±SD | 4.62±4.03 | 4.62±4.03 | 0.07 |
| Stroke recurrence at 1-year follow-up, n (%) | 65 (7.1) | 11 (5.2) | 0.61 |
| Death at 6-year follow-up, n (%) | 130 (12.2) | 35 (16.6) | 0.40 |
Smoker, with or without a history of smoking.
ISH, ischaemic stroke; NIHSS score, the first National Institutes of Health Stroke Scale.