Comparison of participant characteristics in the PRECISE study and nationwide data
| Characteristics | PRECISE | Nationwide | Sources of nationwide data |
| Female, n (%) | 53.5 | 50.0 | China Statistical Yearbook 201826: national sampling survey data for subjects of 50–74 years in 2017. |
| Age (years), n (%) | |||
| 50–54 | 22.1 | 31.3 | |
| 55–59 | 24.3 | 19.4 | |
| 60–64 | 23.0 | 22.0 | |
| 65–69 | 18.7 | 16.7 | |
| 70–74 | 11.9 | 10.6 | |
| Medical history, n (%) | |||
| Stroke | 2.8 | 3.5 | Wang et al. Nationwide population-based stroke survey in 2013 (N=179 527; 50–79 years)27 |
| Diabetes mellitus | 21.6 | 20.2 | Wang et al. Nationwide population-based diabetes survey in 2013 (N=49 542;≥60 years)18 |
| Hypertension | 43.1 | 42.0 | Wang et al. China Hypertension Survey in 2012–2015 (N=197 609; 45–74 years)17 |
PRECISE, PolyvasculaR Evaluation for Cognitive Impairment and vaScular Events.