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

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

	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

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

ISSN: 1471-2431