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

From: 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

Category IOTF standardsa 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)*
  1. *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
  2. aIOTF indicates the criteria proposed by Cole et al. [14, 15]