Burden and spectrum of disease in people with diabetes in Tonga.

Setting: National Diabetes Centre, Tonga.

Objective: To describe the diabetes patient profile and disease spectrum, assess the impact of diabetic care and evaluate diabetes-attributable adverse outcomes.

Design: Retrospective descriptive study of patients registered in the National Diabetes Registry from its inception in May 2004 to 2012, and review of the National Deaths Registry (2011-2012).