Diabetes treatment satisfaction among a multi-ethnic Aotearoa New Zealand population with uncontrolled type 2 diabetes mellitus.

Abstract

To assess whether diabetes treatment satisfaction differs by ethnicity among participants with insufficient glycaemic control of type 2 diabetes mellitus in a clinical trial involving additional oral diabetes medications. Patient satisfaction is used as an indicator of healthcare quality. However, data on patients' diabetes treatment satisfaction in the context of insufficient glycaemic control is limited. Individuals with type 2 diabetes and an HbA1c of 58-110mmol/mol (7.5-12.5%) were recruited across Aotearoa New Zealand to participate in an 8-month randomised crossover study of vildagliptin and pioglitazone as add-on therapy to metformin and/or sulfonylurea. Participants completed the Diabetes Treatment Satisfaction Questionnaire (DTSQ) at baseline pre-randomisation. Treatment satisfaction scores were compared between ethnic groups and other characteristics using the analysis of variance and linear regression. Perceived hyper- and hypoglycaemia were summarised separately. Between February 2019 and March 2020, 346 participants (41% women, 32% Pacific peoples, 23% Māori, 26% European) completed the DTSQ. Mean (SD) age was 57.5 (10.9) years, diabetes duration was 9 (6.3) years and HbA1c was 75 (12)mmol/mol (9.0[3.2]%). At study entry, 40% were receiving monotherapy for diabetes. Treatment satisfaction was rated highly, with a score of 29(6) (interquartile range 25-33). Pacific peoples and older people reported greater treatment satisfaction than other groups (p<0.001). Diabetes treatment satisfaction was high, particularly among Pacific peoples, despite suboptimal glycaemic control and insufficient glucose-lowering therapy.