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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 diabetes 17.6 7.5 0.001 
Parental age (years)    
 Father’s age at birth 31.3 ± 6.1 30.7 ± 6.2 0.22 
 Mother’s age at birth 28.2 ± 5.4 28.1 ± 5.2 0.90 
Number of siblings    
 0 10.3 7.9 0.18 
 1 52.8 50.5 0.35 
 ≥2 47.2 49.5 0.35 
Proportion of immigrants    
 Subjects 2.7 8.0 0.003 
 Mothers 9.0 15.1 0.011 
 Fathers of mothers 9.4 16.0 0.007 
 Father of fathers 11.9 17.2 0.047 
Family characteristics at diagnosisDiabetic patientsControl subjectsP
Heredity    
 First degree relatives with diabetes 17.6 7.5 0.001 
Parental age (years)    
 Father’s age at birth 31.3 ± 6.1 30.7 ± 6.2 0.22 
 Mother’s age at birth 28.2 ± 5.4 28.1 ± 5.2 0.90 
Number of siblings    
 0 10.3 7.9 0.18 
 1 52.8 50.5 0.35 
 ≥2 47.2 49.5 0.35 
Proportion of immigrants    
 Subjects 2.7 8.0 0.003 
 Mothers 9.0 15.1 0.011 
 Fathers of mothers 9.4 16.0 0.007 
 Father of fathers 11.9 17.2 0.047 

Data are % or means ± SD.

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