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Figure 1 Adjusted 1‐year mortality. Abbreviation: y, years. Hazard ratios (HR) were calculated using Cox regression analysis. For information on covariates, see Methods. HR at 1 year: ⩽59 years, HR = 1.12 (95% CI 0.85 to 1.47); 60–69 years, HR = 0.99 (95% CI 0.85 to 1.16); 70–79 years, HR = 1.14 (95% CI 1.05 to 1.23); ⩾80 years HR = 1.13 (95% CI 1.05 to 1.20).
