Table 1

Mean (SE) measured BMI, self-reported BMI, and difference across age and sex groups from cross-sectional surveys in 1995 and 2007-2008 (population-weighted data)

1995

2007-2008

Age group (years)

N

Measured

BMI

Self-reported BMI

Difference in BMI*

N

Measured

BMI

Self-reported BMI

Difference in BMI*


Men

20-29

871

25.22 (0.17)

24.46 (0.16)

-0.76 (0.06)

704

25.66 (0.26)

25.30 (0.25)

-0.36 (0.07)

30-39

1065

26.63 (0.14)

25.60 (0.13)

-1.03 (0.05)

874

27.53 (0.22)

27.04 (0.22)

-0.49 (0.06)

40-49

904

27.27 (0.15)

26.09 (0.15)

-1.19 (0.06)

940

27.85 (0.22)

27.50 (0.21)

-0.36 (0.06)

50-59

731

27.70 (0.17)

26.33 (0.17)

-1.37 (0.07)

780

28.57 (0.21)

27.87 (0.21)

-0.70 (0.06)

60-69

649

27.77 (0.19)

26.25 (0.17)

-1.53 (0.07)

726

28.65 (0.22)

27.70 (0.21)

-0.96 (0.08)

70+

488

27.04 (0.18)

25.16 (0.18)

-1.88 (0.08)

543

27.94 (0.25)

26.70 (0.23)

-1.24 (0.10)

Overall

4708

26.77 (0.07)

25.59 (0.07)

-1.18 (0.03)

4567

27.60 (0.10)

26.99 (0.10)

-0.62 (0.03)

Women

20-29

902

23.70 (0.21)

22.63 (0.17)

-1.07 (0.09)

650

24.68 (0.28)

24.17 (0.28)

-0.51 (0.07)

30-39

1070

25.13 (0.18)

23.97 (0.17)

-1.16 (0.06)

949

25.65 (0.19)

25.06 (0.19)

-0.59 (0.06)

40-49

982

26.16 (0.20)

24.93 (0.19)

-1.23 (0.06)

930

26.83 (0.22)

26.16 (0.23)

-0.67 (0.08)

50-59

760

27.23 (0.21)

25.81 (0.19)

-1.41 (0.06)

728

27.44 (0.28)

26.70 (0.27)

-0.75 (0.07)

60-69

667

27.32 (0.22)

25.56 (0.21)

-1.77 (0.08)

681

27.79 (0.24)

26.85 (0.22)

-0.94 (0.08)

70+

545

26.61 (0.22)

24.26 (0.20)

-2.35 (0.09)

636

26.93 (0.28)

25.65 (0.26)

-1.28 (0.11)

Overall

4926

25.76 (0.09)

24.36 (0.08)

-1.40 (0.03)

4574

26.44 (0.10)

25.70 (0.10)

-0.74 (0.03)


* Calculated from self-reported minus measured BMI; therefore, negative values indicate underreporting of BMI.

Hayes et al. Population Health Metrics 2011 9:53   doi:10.1186/1478-7954-9-53

Open Data