Table 2

Prevalence of thinness categories based on the IS cut-offs and the WHO cut-offs

Categories

Boys (n = 16,672)

Girls (n = 16,668)

Total (n = 33,340)


IS cut-offs

Grade 1

<18.5 kg/m2 *

22.5 (21.9 - 23.2)

20.3 (19.7 - 20.9)

21.4 (21.0 - 21.9)

Grade 2

<17.0 kg/m2 *

6.2 (5.8 - 6.6)

6.6 (6.2 - 7.0)

6.4 (6.2 - 6.7)

Grade 3

<16.0 kg/m2 *

1.6 (1.4 - 1.8)

2.3 (2.1 - 2.6)

2.0 (1.8 - 2.1)

WHO cut-offs

<-1 SD

27.8 (27.1 - 28.5)

23.7 (23.0 - 24.3)

25.7 (25.2 - 26.2)

Thinness

<-2 SD

7.7 (7.3 - 8.1)

5.7 (5.4 - 6.1)

6.7 (6.4 - 7.0)

Severe thinness

<-3 SD

1.4 (1.2 - 1.6)

1.0 (0.9 - 1.2)

1.2 (1.1 - 1.3)


IS cut-offs: criteria from an international survey [7]; WHO cut-offs: criteria from the World Health Organization [8]; SD: standard deviation.

Results are expressed as percentage (95% confidence interval).

*at age 18 years

Bovet et al. Nutrition Journal 2011 10:65   doi:10.1186/1475-2891-10-65

Open Data