Table 1.
Distribution of major risk factors for stroke in individuals at baseline (2004–2008), 1st resurvey (2008), and 2nd resurvey (2013–2014) in the China Kadoorie Biobank.
| Men | ||||||
|---|---|---|---|---|---|---|
| Risk factor | Baseline (2004–2008) | Resurvey 1 (2008) | Resurvey 2 (2013–2014) | |||
| No stroke (n = 4,885) | Total stroke (n = 267) | No stroke (n = 4,885) | Total stroke (n = 267) | No stroke (n = 4,885) | Total stroke (n = 267) | |
| Age, mean, yr | 51.3 | 60.3 | 53.9 | 62.9 | 59.3 | 68.4 |
| Current smoking, % | 68.7 | 61.4 | 65.8 | 58.1 | 55.9 | 50.4 |
| Coronary heart disease, % | 1.8 | 7.9 | 2.8 | 9.7 | 5.9 | 13.9 |
| Age 65 yrs + , % | 11.5 | 33.7 | 16.2 | 46.4 | 29.3 | 64.4 |
| Diabetes, % | 3.5 | 7.1 | 5.6 | 13.1 | 9.3 | 16.9 |
| BP-lowering treatment, % | 6.6 | 12.7 | 9.7 | 21.3 | 18.9 | 27.3 |
| SBP, mean, mmHg | 132 | 140 | 126 | 134 | 135 | 147 |
| Women | ||||||
|---|---|---|---|---|---|---|
| Risk factor | Baseline (2004–2008) | Resurvey 1 (2008) | Resurvey 2 (2013–2014) | |||
| No stroke (n = 8,224) | Total stroke (n = 377) | No stroke (n = 8,224) | Total stroke (n = 377) | No stroke (n = 8,224) | Total stroke (n = 377) | |
| Age, mean, yr | 50.1 | 57.1 | 52.7 | 59.8 | 58.2 | 65.3 |
| Current smoking, % | 2.9 | 4.2 | 2.5 | 3.2 | 2.2 | 2.4 |
| Coronary heart disease, % | 2.3 | 6.1 | 3.4 | 9.5 | 6.7 | 17.2 |
| Age 65 yrs + , % | 7.9 | 23.6 | 12.0 | 30.2 | 24.1 | 50.9 |
| Diabetes, % | 4.1 | 10.3 | 7.0 | 16.2 | 10.8 | 20.7 |
| BP-lowering treatment, % | 8.8 | 15.4 | 11.6 | 20.4 | 20.7 | 32.6 |
| SBP, mean, mmHg | 130 | 140 | 124 | 133 | 135 | 147 |
Note: “No Stroke” columns include individuals who remained stroke-free until being censored, even if lost to follow up before 3 years.