Table 2 —

Family characteristics in type 1 diabetic patients with islet antibodies in the DISS 1992-1993 patient-control study with regard to heredity, parental age, number of siblings, and immigrants

Family characteristics at diagnosisDiabetic patientsControl subjectsP
Heredity
 First degree relatives with diabetes17.67.50.001
Parental age (years)
 Father’s age at birth31.3 ± 6.130.7 ± 6.20.22
 Mother’s age at birth28.2 ± 5.428.1 ± 5.20.90
Number of siblings
 010.37.90.18
 152.850.50.35
 ≥247.249.50.35
Proportion of immigrants
 Subjects2.78.00.003
 Mothers9.015.10.011
 Fathers of mothers9.416.00.007
 Father of fathers11.917.20.047
  • Data are % or means ± SD.