Fig. 4

Dose–response relationship between risk of total mortality with systolic blood pressure, diastolic blood pressure and pulse pressure as continuous variables, in the treated and untreated population. In the treated population, the relationship was linear for SBP (a), U-shaped for DBP (b) and linear for PP (c). In the untreated population, the relationship was linear for SBP (d), U-shaped for DBP (e) and non-linear for PP (f)