Table 1

Overall incidence density of diabetes-related complications among patients with type 1 diabetes between 1999 and 2013

RetinopathyProliferative retinopathySTDRNeuropathyNephropathyRenal failureCVDDKAOutpatient hypoglycaemiaHospitalised hypoglycaemia
No of cases*3359397039833742363440033916220539343987
15321579055868836117996913105
Follow-up time (person-years)†15 67526 73327 13923 32021 93627 49126 664822422 86526 968
Incidence density
(1000 person-years)
(95% CI)
97.74
(92.9 to 102.8)
5.87
(5.0 to 6.9)
3.32
(2.7 to 4.1)
23.93
(22.0 to 26.0)
31.36
(29.1 to 33.8)
1.31
(0.9 to 1.8)
4.39
(3.6 to 5.3)
121.11
(113.7 to 128.9)
39.93
(37.4 to 42.6)
3.89
(3.2 to 4.7)
  • Patients with type 1 diabetes were retrieved from incident cases from 2000 to 2012. Follow-up time started from the first diagnosis date to the time the event occurred, death, discontinued enrolment from Taiwan’s National Health Insurance Programme, or the end of 2013, whichever came first.

  • *No of cases refers to the number of patients who had no complication of interest in the baseline year (1 year before diagnosis date).

  • †No of cases with event refers to the number of patients who had incident events after type 1 diabetes was confirmed.

  • ‡Cumulative follow-up time (person-years) was calculated as the sum of follow-up years during observation period.

  • CVD, cardiovascular disease, DKA, diabetic ketoacidosis; STDR, sight-threatening diabetic retinopathy.