Table 1.
Age-specific relative risks of stroke occurrence due to raised systolic blood pressure (SBP) and body mass index (BMI) (GBD 2010 study estimates for South Africa, Amy VanderZanden - personal communication)
| Risk factor | RR | 25–29 | 30–34 | 35–39 | 40–44 | 45–49 | 50–54 | 55–59 | 60–64 | 65–69 | 70–74 | 75–79 | 80+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SBP | RR for 10 mmHg increase | 2.17 | 2.07 | 1.97 | 1.88 | 1.8 | 1.71 | 1.64 | 1.56 | 1.49 | 1.42 | 1.36 | 1.26 |
| RR for 1 mmHg increase | 1.08 | 1.08 | 1.07 | 1.07 | 1.06 | 1.06 | 1.05 | 1.05 | 1.04 | 1.04 | 1.03 | 1.02 | |
| 95 % CI | (2.03–2.31) | (1.95–2.20) | (1.87–2.09) | (1.79–1.99) | (1.71–1.89) | (1.64–1.79) | (1.57–1.71) | (1.50–1.62) | (1.44–1.54) | (1.38–1.46) | (1.32–1.39) | (1.24–1.29) | |
| BMI | RR for 5 kg/m2 increase | 1.88 | 1.81 | 1.74 | 1.68 | 1.61 | 1.55 | 1.49 | 1.44 | 1.38 | 1.33 | 1.28 | 1.21 |
| RR for 1 kg/m2 increase | 1.13 | 1.13 | 1.12 | 1.11 | 1.10 | 1.09 | 1.08 | 1.08 | 1.07 | 1.06 | 1.05 | 1.04 | |
| 95 % CI | (1.69–2.08) | (1.64–1.99) | (1.59–1.91) | (1.54–1.82) | (1.49–1.74) | (1.45–1.67) | (1.40–1.60) | (1.36–1.53) | (1.31–1.46) | (1.27–1.40) | (1.23–1.33) | (1.17–1.25) |