AIMS: Our aims were to describe health care utilisation patterns across sectors in patients with type 2 diabetes(T2D), and to identify patient characteristics associated with low continuity of care. METHODS: A nationwide register-based cohort study including all Danish citizens recorded with a diagnosis of T2 diabetes in 2017. The outcome was continuity of care as measured by three different indices: the Continuity of Care Index (COCI), the Usual Provider of Care Index (UPC), and the Sequential Continuity Index (SECON). RESULTS: The median of patients with T2D had 75 % of their contacts to their usual health care provider. The strongest association with low continuity of care was the number of comorbidities, showing a dose response trend. Other patient characteristics associated with low continuity of care were duration of T2 diabetes (>
10.3 years), lower age group (40-49 years), having a high education level (>
15 years) and having a cancer comorbidity. CONCLUSIONS: Our study was the first step to flag patients at potential risk of fragmented care due to many transitions between providers. This is of importance for the general practitioners, who are the coordinators of the patients with T2D and their various health conditions and contacts.