Distribution of family members in 102 families. The families were divided into the following subgroups (i) CD group: 69 families with only the intestinal manifestation of coeliac disease, (ii) DH group: 33 families who also had dermatitis herpetiformis patients, (iii) FM group: 56 families with both males and females as affected sibs, and (iv) FF group: 46 families with only females as affected sibs. Two of the families contained affected sibpairs in the third generation
| CD group | DH group | Total | |
| FM group | 37 families | 19 families | 56 families |
| 87 siblings (40F, 47M) | 54 siblings (27F, 27M) | 141 siblings (67F, 74M) | |
| 62 parents (13 affected) | |||
| FF group | 32 families | 14 families | 46 families |
| 71 siblings | 34 siblings | 105 siblings | |
| 49 parents (4 affected) | |||
| Total | 69 families | 33 families | 102 families |
| 158 siblings | 88 siblings | 246 siblings (172F, 74M) | |
| 82 parents (11 affected) | 29 parents (6 affected) | 111 parents (17 affected) |
F=female, M=male.