Haemoglobin A1c concentrations were associated with increased cardiovascular disease and all cause mortality

and commentary also appear in ACP Journal Club . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . For correspondence: Dr K T Khaw, University of Cambridge, Cambridge, UK. kk101@medschl.cam.ac.uk Sources of funding: Medical Research Council United Kingdom; Cancer Research United Kingdom; European Union; Stroke Association; British Heart Foundation. Adjusted relative risks (RRs) for coronary heart disease events, cardiovascular disease events, and all cause mortality by haemoglobin A1c concentrations and history of diabetes* Outcomes at mean 6 y Adjusted RR (95% CI) per 1% increase in HbA1c concentration Adjusted RR (CI) for diabetes history (yes vs no)