Table 1.
Description of the research population
| Primary study (children with type 1 diabetes) | Primary with measured islet autoantibodiesa | Follow-up family-based study | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Variable | Very young | Pre-pubertal | Pubertal | Post-pubertal | 1 | 2 | 3 | 4 | Healthy siblings | Type 1 diabetes |
| Number of participants | 391 | 918 | 550 | 58 | 13 | 34 | 72 | 181 | 244 | 188 |
| Number of female participants | 192 | 352 | 312 | 48 | 8 | 14 | 28 | 86 | 116 | 86 |
| Age of female participants (years) | 4.2 (0.6–6) | 8.8 (6–11) | 12.6 (11–15) | 16 (15–19.1) | 12.7 (6.9–14.5) | 10.7 (2.3–14.4) | 9.2 (4.7–14.9) | 9.7 (0.6–16.1) | 11 (2–23) | 9.7 (0.6–16.1) |
| Number of male participants | 199 | 566 | 238 | 10 | 5 | 20 | 44 | 95 | 128 | 102 |
| Age of male participants (years) | 4 (0.6–6) | 10.3 (6–13) | 14.3 (13–16.9) | 17.4 (17–18.3) | 10.2 (5.4–11.8) | 11.4 (2–15.9) | 11.5 (2.4–17.6) | 10.7 (2.6–16.1) | 11 (2–23) | 10.1 (1.4–16.9) |
Values for age are medians (range)
aGrouped by number of autoantibodies