Table 1.
Characteristics of Study Participants
| Matched reference individuals | Celiac disease | |
|---|---|---|
| Total (n) | 144,400 | 29,074 |
| Age at study entry, years [median (range)] | 30 (0–95) | 30 (0–95) |
| Attained age, years [median (range)] | 42 (1–107) | 42 (1–100) |
| Age 0–19 [n (%)] | 58,852 (40.8) | 11,802 (40.6) |
| Age 20–39 [n (%)] | 26,375 (18.3) | 5310 (18.3) |
| Age 40–59 [n (%)] | 32,206 (22.3) | 6470 (22.3) |
| Age ≥60 [n (%)] | 26,967 (18.7) | 5492 (18.9) |
| Entry year [median (range)] | 1998 (1969–2008) | 1998 (1969–2008) |
| Follow-up,a years [median (range)] | 10 (0–40) | 10 (0–40) |
| Females [n (%)] | 89,454 (61.9) | 17,989 (61.9) |
| Males [n (%)] | 54,946 (38.1) | 11,085 (38.1) |
| Calendar year of biopsy and study entry | ||
| 1969–1989 [n (%)] | 20,369 (14.1) | 4103 (14.1) |
| 1990–1999 [n (%)] | 59,809 (41.4) | 12,048 (41.4) |
| 2000–2008 [n (%)] | 64,222 (44.5) | 12,923 (44.4) |
| Country of birth | ||
| Nordicb [n (%)] | 136,163 (94.3) | 28,117 (96.7) |
| Any diabetes [n (%)] | 6658 (4.6) | 2173 (7.5) |
a
Follow-up time until diagnosis of thyroid cancer, death from other cause, emigration, or December 31, 2009. In reference individuals, follow-up can end through small intestinal biopsy.
b
Sweden, Denmark, Finland, Norway, and Iceland.