Mortality risk in people with Type 2 diabetes : a large prospective population-based cohort study (The Ayrshire Diabetes Follow-Up Cohort (ADOC) Study)

Background: This study investigated the effects of age, gender, socio-economic status, smoking status, hypertension, ischaemic heart disease, Body Mass Index (BMI), Glycaemic control (HbA1c) and dyslipidaemia in type 2 diabetes in a population-based analysis. Methods: Data were collected from 46 General Practice databases in 2009 and 2014. Cox regressions were run in type 2 diabetes patients plus the non-diabetes population. Results: Individuals with type 2 diabetes (n=16,643) had higher mortality rates than non-diabetes subjects. Ranked in order of Hazard Ratio (HR), increasing age (HR 2.31), smoking (HR 1.79), IHD (HR 1.65), deprivation (HR 1.36), hypertension (HR 1.23) and male gender (HR 1.20) all increased mortality risk (p<0.01). Statin therapy was associated with better outcome (HR 0.65, p<0.01). Abnormal lipid levels whilst not on a statin significantly increased mortality risk for raised total-cholesterol (HR 1.74) and low HDL-cholesterol (HR 1.48) but not for triglycerides (HR 0.67) (all p