Descriptive characteristics of patients with T1D during follow-up 1998–2014
| Patients with NF1 | Controls | Siblings without NF1 | |
| n | 7 | 129 | 19 |
| Sex | |||
| Female, n (%) | 5 (71.4) | 57 (44.2) | 7 (36.8) |
| Male, n (%) | 2 (28.6) | 72 (55.8) | 12 (63.2) |
| Age at first T1D-related encounter during follow-up, mean (SD) | 31.05 (19.15) | 30.17 (20.42) | 33.16 (20.99) |
| Number of T1D-related encounters/patient, median (range) | 25 (2 to 72) | 21 (1 to 1195) | 22 (1 to 62) |
| Number of insulin purchases (ATC A10A)/patient, median (range) | 50 (2 to 115) | 66 (1 to 152) | 62 (15 to 118) |
| Special drug reimbursement for insulin, n (%) | 7 (100) | 129 (100) | 19 (100) |
ATC, Anatomical Therapeutic Chemical classification; NF1, neurofibromatosis type 1; T1D, type 1 diabetes.