Figure 3.

Incidence of ischaemic heart disease, ischaemic stroke, and intracerebral haemorrhage versus usual SBP

HRs at ages 40–79 years, adjusted for age at risk (5-year groups), sex, area, education, smoking, alcohol consumption, and body-mass index. For each category, the area of each square is inversely proportional to the variance of the category-specific log risk, which also determines the 95% CI. The HR is shown above each square and numbers of events below. Analyses were done in 489 125 participants at risk and reasons for exclusion are shown in the table. SBP=systolic blood pressure. HR=hazard ratio.