Table 2. Association of Mean Blood Pressure (BP) and Smoking Prevalence Time Trends With Subarachnoid Hemorrhage (SAH) Incidencea.
| Measure | Mean (Range) | Annual Change, % (95% CI) | 1980 Estimate (Range) | 2010 Estimate (Range) | Annual Decrease in SAH Incidence per Unit Decrease, % (95% CI) |
|---|---|---|---|---|---|
| Systolic BP, mm Hg | 134.9 (106.4 to 161.8) | −0.2 (−0.3 to −0.1) | 120.4 (118.6 to 122.2) | 114.6 (112.9 to 116.3) | 7.1 (5.8 to 8.4) |
| Diastolic BP, mm Hg | 79.1 (65.1 to 88.1) | 0.01 (−0.02 to 0.04) | 70.6 (69.5 to 71.6) | 70.8 (69.8 to 71.7) | 11.5 (8.8 to 14.3) |
| Smoking prevalence, % | 19.3 (0.3 to 72.9) | −0.5 (−0.6 to −0.4) | 26.5 (22.7 to 30.3) | 11.9 (8.4. to 15.4) | 2.4 (1.6 to 3.3) |
a
All analyses are adjusted for age and sex.