Table 5:

Comparison of the percentage of overweight, obese, and extreme obesity distribution of patient population from the current study versus age-adjusted prevalence among US adults 20 years of age and older

CategoryNHANESa 2009–2010Study PopulationP Value
Sample size5926584
Total (%)
    Overweight33.0%24.3%.56
    Obese35.7%29.9%.8
    Extremely obese6.3%23.1%.008
Men (%)
    Overweight38.4%36.9%.5
    Obese35.5%26.1%.1
    Extremely obese4.4%9.2%.5
Women (%)
    Overweight27.9%17.9%.8
    Obese35.8%31.8%.5
    Extremely obese8.1%30.0%.0008
  • Note:—NHANES indicates National Health and Nutrition Examination Survey.

  • a The percentage of the extremely obese female patients is significantly higher in our study population compared with the age-adjusted prevalence in US population.