Randomised and non-randomised comparative or controlled studies of migrant South Asian populations (total sample or subgroup) with type 2 diabetes mellitus (total sample or reported by diabetes type) that assessed any educational intervention were eligible for inclusion. Qualitative, quantitative and mixed methods studies were eligible for inclusion.
Included studies were mostly of mixed South Asian populations. Most studies were conducted in the UK (one conducted in the Netherlands). The included interventions varied and were either multi-faceted with an educational component or single focus. Group and/or individual interventions were included. Outcome measures assessed were knowledge, awareness and self-management, attitudes and practices, blood pressure, HbA1c, lipids, weight, body mass index (BMI), cholesterol, diet and activity. The study designs were randomised controlled trials (RCTs), cohort and before-and-after studies. Follow-up ranged from three months to three years.
Studies were selected independently by two reviewers. Disagreements were resolved by discussion.