Table 2—

Clinical characteristics by duration of diabetes in 13,612 type 1 diabetic patients in the cross-sectional survey 2004

Total nDuration of diabetes
0–9 years10–19 years20–29 years30–39 years>40 years
n1,6853,1273,5302,7522,518
Age of debut (years)21.6 ± 5.016.9 ± 7.214.9 ± 7.714.2 ± 7.712.2 ± 7.0*
Age (years)26.9 ± 5.031.6 ± 7.239.1 ± 8.348.3 ± 8.260.0 ± 8.5*
Men (%)58.955.255.453.550.8*
A1C (%)7.66 ± 1.438.02 ± 1.278.05 ± 1.198.04 ± 1.147.88 ± 1.08*
A1C <7.0% (%)35.920.618.517.020.7*
Systolic BP (mmHg)119.7 ± 11.8122.1 ± 13.3127.2 ± 15.7133.5 ± 16.9139.8 ± 17.2*
Diastolic BP (mmHg)72.0 ± 8.773.9 ± 8.775.0 ± 9.174.4 ± 8.871.5 ± 9.1*
Pulse pressure (mmHg)47.6 ± 10.748.2 ± 10.952.1 ± 12.959.1 ± 15.168.3 ± 16.2*
BP <130/80 mmHg (%)60.252.040.529.019.1*
Antihypertensives (%)4.410.831.052.066.5*
Hypertension (%)12.820.241.865.881.9*
BMI (kg/m2)24.8 ± 4.325.4 ± 3.825.5 ± 3.725.4 ± 3.925.0 ± 3.8*
Total cholesterol (mmol/l)11,8554.49 ± 0.894.67 ± 0.914.80 ± 0.914.93 ± 0.924.91 ± 0.88*
Triglycerides (mmol/l)11,3581.12 ± 1.011.12 ± 0.901.11 ± 0.711.15 ± 0.781.13 ± 0.66
HDL cholesterol (mmol/l)11,2191.47 ± 0.461.53 ± 0.451.61 ± 0.471.68 ± 0.531.74 ± 0.53*
LDL cholesterol (mmol/l)10,9932.53 ± 0.762.64 ± 0.802.71 ± 0.782.74 ± 0.792.68 ± 0.76*
Lipid-lowering drugs (%)13,0913.08.520.936.250.8*
Smokers (%)10,83212.814.213.414.311.1
ASA (%)11,9800.72.610.025.444.4*
  • Data are mean values ± SD and frequencies. Significance levels for trend of mean values (ANOVA) or frequencies (χ2 test):

  • *

    * P < 0.001;

  • P > 0.05 (NS);

  • P < 0.05. ASA, aspirin; BP, blood pressure.