Table 1 Characteristics of the cohort, including both subjects with childhood-onset type 1 diabetes and the matched control group, followed from the date of diagnosis of type 1 diabetes

Participants, N

7086

69,356

Male sex, N (%)

3835 (54.1)

37,552 (54.1)

Mean age at end of follow-up, years (range)

31.8 (0.8–59.1)

32.1 (1.42–59.5)

Mean age at onset of type 1 diabetes, years (range)

9.4 (0.09–14.99)

9.4 (0.09–14.99)^a

Mean duration from diabetes onset to end of follow-up, years (range)

22.4 (0.03–44.99)

22.7 (0.07–44.99)^a

Norwegian, N (%)^b

6435 (90.8)

47,781 (68.9)

Lower education, N (%)^c

2469 (34.8)

21,400 (30.9)

Intermediate education, N (%)

2634 (37.2)

22,435 (32.3

Higher education (%)

1902 (26.8)

17,952 (25.9)