Risk of Neurodegenerative Diseases in Elderly Koreans with an Initial Diagnosis of Type 2 Diabetes: A Nationwide Retrospective Cohort Study

Table 2

Person-years incidence rates of ND over a 10-year follow-up period.

Group	Person-years	No. of ND	Rate	95% CI
Control	1,210,934.31	44,673	36.89	36.55~37.24
T2D	1,143,667.45	51,096	44.68	44.29~45.07
Total	2,354,601.76	95,769	40.67	40.42~40.93

Rate means incidence rate (per 1000 person-years). ND: neurodegenerative disease; CI: confidence interval; T2D: type 2 diabetes.