Table 1

Cross-Classification of Measured BMI and Self-Reported BMI for Standard BMI Categories*

    Measured BMI:


    Self Reported BMI
:

Under-weight

< 18.5

Normal Weight

18.5 < 25

Over-

weight

25 < 30

Obese

30 < 40

Extreme Obesity

40+


< 18.5

    56.5%

1.5%

0.1%

0.0%

0.0%


18.5 < 25

43.5%

    90.4%

16.0%

0.8%

0.0%


25 < 30

0.0%

8.0%

    78.9%

19.0%

0.3%


30 < 40

0.0%

0.1%

5.1%

    78.5%

27.8%


40+

0.0%

0.0%

1.6%

    71.9%


N = 15161; Population Size: 193,275,651


* Measured BMI was calculated using physical measurements of height and weight;

Self-reported BMI was calculated using self-reported height and weight.

Source: National Health and Nutrition Examination Survey, 2001-2006. National Center for Health Statistics, CDC

Stommel and Schoenborn BMC Public Health 2009 9:421   doi:10.1186/1471-2458-9-421

Open Data