Table 1—

Characteristics of the clinic-based cohort of 471 individuals with type 1 diabetes by C-peptide tertile

C-peptide tertile (nmol/l)
P
<0.060.06–0.100.11–2.76
n201148122
Male111 (55.2)79 (53.4)75 (61.5)0.38
Age (years)38.2 ± 10.538.6 ± 9.439.1 ± 9.70.79
Diabetes duration (years)13.9 (7.5–19.8)11.1 (4.9–19.2)4.0 (0.8–8.5)0.001
    <1038 (23.0)43 (26.1)84 (50.9)<0.0001
    10–1979 (48.8)58 (35.8)25 (15.4)
    20–2956 (55.4)34 (33.7)11 (10.9)
    ≥3028 (65.1)13 (30.2)2 (4.7)
BMI (kg/m2)24.1 ± 3.424.5 ± 3.624.5 ± 4.10.50
Systolic blood pressure (mmHg)123.1 ± 15.8121.9 ± 15.2120.3 ± 14.90.29
Diastolic blood pressure (mmHg)74.4 ± 9.974.4 ± 9.175.1 ± 8.90.74
Glucose (mmol/l)12.4 ± 5.812.9 ± 5.212.1 ± 5.30.51
A1C (%)8.2 ± 1.38.2 ± 1.38.0 ± 1.40.44
Positivity for autoimmunity119 (65.4)98 (72.1)102 (85.7)0.001
Total cholesterol (mmol/l)5.20 ± 1.005.28 ± 1.055.00 ± 1.180.10
HDL cholesterol (mmol/l)1.56 ± 0.471.57 ± 0.471.41 ± 0.450.005
LDL cholesterol (mmol/l)3.14 ± 0.833.18 ± 0.852.96 ± 0.960.12
Triglycerides (mmol/l)0.961.011.110.05
  • Data are means ± SD, n (%), or geometric mean (25th–75th percentile) unless otherwise indicated.