Behavioural and social determinants of type 2 diabetes self-care adherence in a low-resource setting in South Ethiopia: a cross-sectional study using integrated health belief model and health-related quality-of-life frameworks
Temesgen Anjulo Ageru, Cua Ngoc Le, Apichai Wattanapisit, Eskinder Wolka Woticha, Charuai SuwanbamrungObjectives
To investigate the behavioural and social determinants of type 2 diabetes mellitus (T2DM) self-care adherence in South Ethiopia using the integrated health belief model (HBM) and health-related quality-of-life (HRQoL) frameworks.
Design
A cross-sectional study.
Setting
Three public hospitals in South Ethiopia: Wolaita Sodo University Comprehensive Hospital, Humbo Primary Hospital and Boditi Primary Hospital.
Participants
404 systematically sampled adults aged 18–60 years with a confirmed diagnosis of T2DM who had been attending follow-up clinics for at least 12 months. Exclusion criteria included newly diagnosed T2DM, pregnancy, severe comorbidities or critical illness and unwillingness to participate.
Primary and secondary outcome measures
The primary outcome was adherence to diabetes self-care, assessed using the Summary of Diabetes Self-Care Activities scale across five domains: diet, physical activity, medication intake, blood glucose monitoring and foot care. Good adherence was defined as engagement in recommended behaviours on ≥50% of days per week. Secondary outcomes included socio-demographic factors, clinical variables, HBM constructs (perceived susceptibility, severity, benefits, barriers, cues to action and self-efficacy) and HRQoL domains (physical, psychological, social and environmental).
Results
Of 404 participants, 58.4% demonstrated good adherence. In multivariable analysis, insulin-only treatment (AOR=3.0; p<0.001), having comorbidities (AOR=2.02; p=0.007) and poor glycaemic control (AOR=3.6; p=0.003) were positively associated with adherence. Factors associated with poor adherence included low income (AOR=0.18; p=0.002), living alone (AOR=0.19; p=0.012), low self-efficacy (AOR=0.18; p<0.001) and poor psychological health (AOR=0.53; p=0.024).
Conclusion
The findings challenge the direct application of standard behavioural models in low-resource settings. Structured factors, such as poverty, can overwhelm psychological mechanisms. Effective interventions must integrate economic support with psychological care to improve self-care adherence.