Weight-height relationships and central obesity in 7-year-old to 10-year-old Polish urban children: a comparison of different BMI and WHtR standards

Table 1 Percentages (SE) of examined children grouped into specific BMI categories based on different BMI standards

Category	IOTF standards^a	Kułaga et al. standards [22]	Tomaszewski et al. standards [24]
Girls (n = 367)
Underweight	13.7 (1.8)	4.7 (1.1)****	8.5 (1.5)^,***
Normal	66.2 (2.5)	76.9 (2.2)***	72.8 (2.3)**
Overweight	15.7 (1.9)	13.5 (1.8)	15.7 (1.9)
Obesity	4.4 (1.1)	4.9 (1.1)	3.0 (0.9)
Boys (n = 424)
Underweight	7.8 (1.3)*	3.8 (0.9)**	5.9 (1.1)
Normal	71.6 (2.2)	80.6 (1.9)**	69.5 (2.2)*******
Overweight	15.1 (1.7)	10.2 (1.5)**	16.5 (1.8)******
Obesity	5.4 (1.1)	5.4 (1.1)	8.0 (1.3)*

*Significantly different from the rate of occurrence observed in girls (p < 0.01). Significantly different from the percentage estimated using the IOTF criteria: **p < 0.05; ***p < 0.01; ****p < 0.001. Significantly different from the percentage estimated using the criteria proposed by Kułaga et al. [22]: *****p < 0.05; ******p < 0.01; *******p < 0.001
^aIOTF indicates the criteria proposed by Cole et al. [14, 15]

ISSN: 1880-6805