Are insulin analogues detemir or glulisine used preferentially in overweight/obese subjects? A German multicentre analysis of 38560 type 2 diabetic patients from the DPV registry.

Objective: Several studies suggest benefits of insulin analogues detemir or glulisine in overweight and obese patients with type 2 diabetes. The present multicentre study therefore examines, whether these insulin analogues are used more frequently in patients with increased body mass index. Methods: Data of 38 560 adult type 2 diabetic patients using insulin analogues, from 150 centres in Germany, registered in a standardized, prospective, computer-based documentation program (DPV), were included. Patients were classified into body mass index categories according to World Health Organization. Analysis was stratified by 3 time periods. To adjust for confounding effects, multivariable logistic regression models were created. Results: Detemir was preferentially used in overweight (OR 1.36, 95%-CI 1.20–1.53) and obese patients (OR 2.06, 95%-CI 1.84–2.31) compared to normal-weight patients. These effects remained significant after adjusting for sex, age, new/old federal state of Germany, size of centre, treatment in university clinic and clinic/specialized private practice. Models were additionally adjusted for time period and interaction of BMI category with age or sex. For glulisine, a minor effect was present when comparing obese to normal-weight patients (OR 1.26, 95%-CI 1.06–1.50). After adjustment, this finding was no longer significant. Stratified by obesity grade, class III obese patients more frequently used detemir or glulisine compared to class I obese patients. Comparing time periods, odds ratios did not differ, neither for detemir nor for glulisine. Conclusion:  Detemir is used more often in overweight and obese patients compared to normal-weight patients. For glulisine, the relationship is less pronounced.