Figure 2.

Risks of cardiovascular events and 95% confidence intervals from sensitivity analyses in which subjects who experienced a cardiovascular event within 1 year, 2 years, 3 years, or 5 years from baseline assessment were progressively excluded. Using the Cox model, the hazard ratio is estimated by excluding all observations corresponding to survival times before the lower time interval point. Circles indicate adjusted hazard ratios for a 10 bpm increment in night-time heart rate. Bars indicate number of events. Numbers in the bars indicate number of participants at risk. 1-End F/U indicates from year 1 to end of follow-up. Risk estimates were adjusted for cohort, age, gender, smoking, diabetes, night-time systolic blood pressure, and serum total cholesterol and serum creatinine concentrations.