Derivation and external validation of risk algorithms for cerebrovascular (re)hospitalisation in patients with type 2 diabetes: two cohorts study.

•People with type 2 diabetes are in high risk of cerebrovascular diseases.•No risk scores to predict risk of cerebrovascular (re)hospitalisation in diabetes.•2 Risk scores are derived to predict cerebrovascular (re)hospitalisation in diabetes.•2 Risk scores are externally validated in an independent cohort and performed well.•2 Risk scores can be used to inform clinical decision-making in primary care settings.