Table 1

Study participants by weight categories

Lean
(n = 87)Overweight
(n = 131)Moderately obese
(n = 621)Severely obese
(n = 579)P*
Age (years)13.8 ± 2.913.4 ± 2.813.4 ± 2.812.6 ± 3.1<0.001
Sex<0.001
 Male3439229285
 Female5392392294
Ethnicity<0.001
 Caucasian3972269206
 African American2435223250
 Hispanic2424129123
Height (cm)158 ± 13158 ± 11159 ± 12158 ± 14<0.001
Weight (kg)59.6 ± 15.971.0 ± 14.684.6 ± 19.5104.6 ± 31.6<0.001
BMI
 kg/m223.19 ± 3.3127.95 ± 2.6432.97 ± 4.3040.52 ± 7.38 <0.001
z score1.01 ± 0.731.86 ± 0.092.28 ± 0.132.72 ± 0.19<0.001
NGT87124477440<0.001
IFG/IGT07126125
T2DM001813
Metabolic parameters
 Fasting glucose level (mg/dL)90 ± 890 ± 793 ± 994 ± 10 <0.001
 2-h glucose level (mg/dL)112 ± 14113 ± 17124 ± 29125 ± 29<0.001
 Fasting insulin level (µU/mL)18 ± 925 ± 1034 ± 2340 ± 22<0.001
 Insulinogenic index3.50 ± 3.244.10 ± 3.525.14 ± 6.215.50 ± 4.51<0.001
 Matsuda index3.17 ± 1.812.25 ± 1.121.80 ± 1.001.56 ± 0.96 <0.001
 oDI8.26 ± 4.977.81 ± 5.518.50 ± 7.627.82 ± 9.430.73
 GE (mg/dL/min)3.86 ± 1.243.05 ± 0.772.46 ± 0.891.99 ± 1.01<0.001
  • Data are reported as the mean ± SD or n, unless otherwise indicated.

  • * P values were determined by ANOVA, unless otherwise indicated.

  • χ2 test.