Prevalence of risk factors in patients with ischaemic stroke, CNSRs I–III
| CNSR-I 2007–2008 (%) | CNSR-II 2012–2013 (%) | CNSR-III 2015–2018 (%) | |
| Previous stroke/TIA | 34.1 | 35.6 | 23.9 |
| Diabetes mellitus | 21.6 | 20.7 | 23.5 |
| Hypertension | 63.9 | 64.8 | 63.0 |
| Dyslipidaemia | 11.2 | 12.1 | 7.6 |
| CHD/previous MI | 14.5 | 13.5 | 10.5 |
| Atrial fibrillation | 7.4 | 7.0 | 6.9 |
| Ever smoking | 39.8 | 44.2 | 31.7 |
CHD, coronary heart disease; CNSR, China National Stroke Registry; MI, myocardial infarction; TIA, transient ischaemic attack.