Table 1—

Demographic and clinical characteristics of the study, population

Age <20 years
Age >20 years
Control subjects (n = 37)Type 1 diabetes (n = 39)Control subjects (n = 54)Type 1 diabetes (n = 33)
Age (years)16.5 ± 1.516.4 ± 1.826.5 ± 4.427.6 ± 4.3
Weight (kg)61.9 ± 11.165.4 ± 9.263.1 ± 9.669.9 ± 8.8*
BMI (kg/m2)22.8 ± 3.824.2 ± 3.222.8 ± 3.425.2 ± 3.0
Non-Hispanic Caucasian33 (89.2)39 (100)52 (96.3)31 (93.9)
Other race4 (10.8)0 (0)2 (3.7)2 (6.1)
Age at menarche (years)12.4 ± 1.112.2 ± 1.412.8 ± 1.213.3 ± 1.6
Years from menarche4.3 ± 1.84.4 ± 2.012.8 ± 4.213.6 ± 4.2
Contraceptive usage4 (10.8)5 (12.8)38 (70.4)24 (72.7)
Years on contraceptive0.066 ± 0.280.099 ± 0.382.45 ± 2.843.35 ± 3.85
Smoking status1 (2.7)8 (20.5)*6 (11.3)5 (16.1)
  • Data are means ± SD and n (%).

  • *

    * P < 0.05;

  • P < 0.01, P values are control versus case subjects in the same age-group (Student’s t test for continuous variables and χ2 for categorical data).