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Table 1 Group differences in demographic and biological parameters

From: Preliminary evidence for obesity-associated insulin resistance in adolescents without elevations of inflammatory cytokines

  Lean Obese p-value
Gender (% female) 58.3 55.6 0.832
Race/Ethnicity    χ2 = 1.02
 White (%) 33.3 38.9  
 Hispanic (%) 25.0 27.8  
 African American (%) 25.0 25.0  
 Asian (%) 16.7 8.3  
Age (yrs) 17.2 ± 0.4 17.5 ± 0.3 0.396
Grade 11.2 ± 0.4 11.4 ± 0.2 0.708
BMI (kg/m2) 21.5 ± 0.5 37.4 ± 1.2 0.000**
Waist Circumference (cm) 76.8 ± 1.2 112.2 ± 2.8 0.000**
Waist:Height 0.45 ± 0.01 0.66 ± 0.01 0.000**
Waist:Hip 0.85 ± 0.01 0.94 ± 0.01 0.000**
Glucose (mg/dL) 73.5 ± 1.4 77.3 ± 1.5 0.083
Insulin (IU/mL) 7.4 ± 0.6 18.4 ± 2.0 0.000**
HOMA-IR 1.3 ± 0.1 3.5 ± 0.4 0.000**
Hemoglobin A1C (%) 5.1 ± 0.1 5.4 ± 0.1 0.000**
Total cholesterol (mg/dL) 160.5 ± 5.9 164.1 ± 5.3 0.662
LDL (mg/dL) 91.5 ± 5.1 102.6 ± 4.7 0.125
HDL (mg/dL) 55.0 ± 2.5 43.7 ± 1.5 0.000**
Triglycerides (mg/dL) 70.6 ± 5.6 89.4 ± 7.2 0.064
Systolic BP (mmHg) 101.3 ± 1.9 115.3 ± 2.0 0.000**
Diastolic BP (mmHg) 63.2 ± 1.7 68.0 ± 1.5 0.036*
  1. *Denotes a p-value of >0.05; **denotes a p-value of ≤0.010.
  2. Body mass index (BMI); homeostatic model assessment of insulin resistance (HOMA-IR); low density lipoprotein (LDL); high density lipoprotein (HDL); blood pressure (BP).