Type 2 diabetes mellitus in people with severe mental illness: inequalities by ethnicity and age. Cross‐sectional analysis of 588 408 records from the <scp>UK</scp>

AIMS: To investigate whether the association of severe mental illness with Type 2 diabetes varies by ethnicity and age. METHODS: We conducted a cross-sectional analysis of data from an ethnically diverse sample of 588 408 individuals aged ≥18 years, registered to 98% of general practices (primary care) in London, UK. The outcome of interest was prevalent Type 2 diabetes. RESULTS: Relative to people without severe mental illness, the relative risk of Type 2 diabetes in people with severe mental illness was greatest in the youngest age groups. In the white British group the relative risks were 9.99 (95% CI 5.34, 18.69) in those aged 18-34 years, 2.89 (95% CI 2.43, 3.45) in those aged 35-54 years and 1.16 (95% CI…