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Table 1 Baseline characteristics of the final cohort

From: Serum leptin levels are independently related to the incidence of ischemic heart disease in a prospective study of patients with type 2 diabetes

Variable Men (n = 476) SD Women (n = 244) SD
Mean level   Mean level
Age (years) 60.69 3.1 60.65 3.1
Diabetes duration (years) 7.1 6.36 7.4 5.7
Current smoker (%) 15.9   21.6  
BMI (kg/m2) 29.7 4.2 *31.0 5.4
Waist circumference (cm) 105.2 11 *103.0 13
HbA1c (mmol/mol) 53.0 12 52.8 12
HbA1c (%, Mono-S) 6.09 1.1 6.06 1.12
Total cholesterol (mmol/l) 4.62 .92 4.95 1.03
HDL cholesterol (mmol/l) 1.23 .32 *1.40 .35
LDL cholesterol (mmol/l) 2.62 .75 *2.77 .86
LDL/HDL ratio 2.22 .73 *2.07 .78
Triglycerides (mmol/l) 1.81 1.2 1.78 .88
Systolic BP (mmHg) 136.9 16 137.4 17
Diastolic BP (mmHg) 80.7 10 *78.5 9.9
Antihypertensives (number of drugs) 1.07 1.0 1.00 .93
Statin treatment (%) 53.0   58.0  
OAD (number of drugs) .771 .75 .758 .70
Insulin treatment (%) 29.0   33.2  
PWV (m/s) 10.39 2.1 10.27 2.0
IMT (mm) .755 .19 *0.702 .15
Leptin (ng/ml) 2561 2389 *7159 5654
  1. *Denotes statistical difference between genders.
  2. Abbreviations: BMI, body mass index; BP, blood pressure; HDL, high density lipoprotein; IMT, intima-media thickness of carotid arteries; LDL, low density lipoprotein; OAD, oral antidiabetic drugs; PWV, carotid-femoral pulse wave velocity.
  3. Data was missing in 54 patients for duration of diabetes; 13 patients about smoking; 1 patient for BMI; 5 patients for waist circumferences; 10 patients for HbA1c; 23 patients for cholesterol; 3 patients for BP; 20 patients for IMT and in 59 patients for PWV.