Comparison of CNSR-III with CNSR-I and CNSR-II
| Characteristic | CNSR-I | CNSR-II | CNSR-III |
| Published year | 2011 | 2016 | - |
| Study year | 2007–2008 | 2012–2013 | 2015–2018 |
| Patients (n) | 21 902 | 25 018 | 15 166 |
| Sites (n) | 132 | 219 | 201 |
| Age(yr), mean±SD | 63.8±12.9 | 64.3±12.2 | 62.2±11.3 |
| Female (%) | 38.8 | 37.4 | 31.7 |
| Onset to admission (days) | ≤14 | ≤7 | ≤7 |
| Disease subtypes | |||
| IS (%) | 66.4 | 78.4 | 93.3 |
| TIA (%) | 6.2 | 7.9 | 6.7 |
| ICH (%) | 23.4 | 12.1 | - |
| SAH (%) | 3.4 | 1.2 | - |
| Imaging and biological sample collection | No | No | Yes |
| Follow-up (years) | 1 | 1 | 5 |
CNSR, China National Stroke Registry; ICH, intracerebral haemorrhage; IS, ischaemic stroke; SAH, subarachnoid haemorrhage; TIA, transient ischaemic attack.