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Table 6 Under- and overestimation of BMI according to characteristics of children and their parents

From: Validity of parent-reported weight and height of preschool children measured at home or estimated without home measurement: a validation study

 

Proportion with difference in BMI

< -1 kg/m², % (n/N)

P*

Proportion with difference in BMI

> +1 kg/m², % (n/N)

P*

Parental report:

      

Height estimated, weight estimated

50.0

(28/56)

 

19.6

(11/56)

 

Height estimated, weight measured

31.4

(11/35)

 

17.1

(6/35)

 

Height measured, weight estimated

46.2

(6/13)

 

7.7

(1/13)

 

Height measured, weight measured

27.2

(44/162)

0.01

4.3

(7/162)

0.01

  1. * according to Fisher's exact test
  2. n = number of cases underestimating/overestimating BMI with > 1 kg/m2 (e.g. difference in BMI less than -1 kg/m2)
  3. N = total number of cases with the specified characteristic (e.g. number of boys; number of children < 5 years old; etc.)