Table 1—

Demographic and clinical characteristics of the study population

Age <20 years
Age ≥20 years
ControlType 1 diabeticP*ControlType 1 diabeticP*
n36374926
Baseline characteristics
    Age (years)15.9 ± 1.516.2 ± 1.80.47825.7 ± 4.427.3 ± 4.10.124
    Non-Hispanic white32 (88.9)37 (100)47 (95.9)25 (96.2)
    Other race4 (11.1)0 (0)0.0372 (4.1)1 (3.9)0.961
    Age at menarche (years)12.4 ± 1.0312.3 ± 1.400.65312.9 ± 1.1713.2 ± 1.400.220
    Years from menarche4.0 ± 1.64.3 ± 2.00.45213.2 ± 4.514.6 ± 4.20.204
    OC use4 (11.1)5 (13.5)0.75533 (67.4)20 (76.9)0.386
    Years on OC0.078 ± 0.280.092 ± 0.370.8592.24 ± 2.763.94 ± 4.060.050
    Smoking status0 (0)7 (18.9)0.0063 (6.1)4 (16.0)0.170
Follow-up
    Follow-up years2.10 ± 0.272.19 ± 0.300.2262.16 ± 0.272.12 ± 0.190.546
    Weight (kg)
Baseline61.5 ± 11.065.2 ± 8.50.10562.7 ± 9.569.0 ± 8.50.006
Follow-up63.7 ± 11.466.9 ± 9.30.18763.9 ± 11.370.2 ± 10.30.020
Change2.21 ± 4.521.69 ± 4.410.6161.21 ± 4.961.21 ± 5.00.998
    BMI (kg/m2)
Baseline22.6 ± 3.524.2 ± 2.90.03622.5 ± 3.025.0 ± 2.80.001
Follow-up23.1 ± 3.624.4 ± 2.70.09322.9 ± 3.725.4 ± 3.50.007
Change0.53 ± 1.70.19 ± 1.60.3740.38 ± 1.90.42 ± 1.80.927
  • Data are means ± SD and n (%).

  • * P values by Student's t test for continuous and χ2 test for categorical variables.