Updated prevalence rates of overweight and obesity in 11- to 17-year-old adolescents in Germany. Results from the telephone-based KiGGS Wave 1 after correction for bias in self-reports

Table 2 Weight status categories derived from measured height and weight according to weight status categories derived from reported values and according to body perception

	All							Boys							Girls
∝_ijk	BMI_reported						Q _jk	BMI_reported						Q _jk	BMI_reported						Q _jk
∝_ijk	I₁	I₂	I₃	I₄	I₅	I₆		I₁	I₂	I₃	I₄	I₅	I₆		I₁	I₂	I₃	I₄	I₅	I₆
BMI_measured								Body perception = 1 (too thin)
I₁	51.4 %	9.7 %	2.4 %			12.8 %	13.0 %	61.1 %	19.2 %	2.3 %			15.8 %	9.8 %	43.0 %	3.1 %	2.8 %			6.7 %	19.1 %
I₂	21.7 %	49.9 %	11.0 %			14.5 %	19.5 %	31.8 %	40.5 %	14.3 %			8.5 %	17.2 %	13.1 %	56.5 %	4.9 %			26.7 %	23.7 %
I₃	26.9 %	40.4 %	86.1 %			72.7 %	58.6 %	7.1 %	40.3 %	82.9 %			75.7 %	62.2 %	43.9 %	40.4 %	92.3 %			66.6 %	51.8 %
I₄			0.4 %							0.6 %
I₅
I₆	-	-	-	-	-	-	8.9 %	-	-	-	-	-	-	10.8 %	-	-	-	-	-	-	5.4 %
								Body perception = 2 (right weight)
I₁	11.9 %	1.5 %	0.1 %			0.9 %	1.9 %	30.9 %	4.3 %	0.2 %				1.3 %	5.9 %					1.9 %	2.6 %
I₂	20.8 %	26.6 %	1.0 %			1.0 %	5.1 %	12.9 %	38.2 %	0.9 %				3.3 %	23.4 %	20.2 %	1.1 %			2.1 %	7.0 %
I₃	63.5 %	69.9 %	95.3 %	40.7 %		86.8 %	82.7 %	56.2 %	57.6 %	93.8 %	57.4 %		78.7 %	84.2 %	65.8 %	76.6 %	96.9 %			95.7 %	81.3 %
I₄	3.8 %		3.5 %	45.2 %	63.5 %	0.2 %	1.8 %			4.8 %	42.6 %	73.0 %		2.7 %	5.0 %		1.9 %	51.6 %		0.4 %	1.0 %
I₅		2.0 %	0.2 %	14.0 %	36.5 %	11.1 %	0.2 %			0.3 %		27.1 %	21.3 %	0.3 %		3.2 %	0.1 %	48.4 %	100.0 %
I₆	-	-	-	-	-	-	8.2 %	-	-	-	-	-	-	8.3 %	-	-	-	-	-	-	8.1 %
								Body perception = 3 (too fat)
I₁							0.1 %							0.1 %							0.2 %
I₂						1.7 %	0.4 %							0.2 %						2.6 %	0.5 %
I₃		100.0 %	75.2 %	5.3 %		23.1 %	54.2 %		100.0 %	72.4 %	1.5 %		21.1 %	50.0 %			77.0 %	8.3 %		24.2 %	57.7 %
I₄	100.0 %		18.4 %	49.3 %	3.2 %	19.7 %	20.8 %			23.2 %	65.1 %	5.0 %	9.0 %	21.8 %	100.0 %		15.2 %	36.8 %		25.6 %	19.9 %
I₅			6.4 %	45.4 %	96.8 %	55.5 %	12.2 %			4.4 %	33.4 %	95.0 %	69.9 %	16.2 %			7.8 %	54.9 %	100.0 %	47.5 %	9.0 %
I₆	-	-	-	-	-	-	12.3 %	-	-	-	-	-	-	11.7 %	-	-	-	-	-	-	12.8 %

BMI_measured: derived from measured height and weight collected in MoMo
BMI_reported: derived from self-reported height and weight collected in the telephone interview from KiGGS Wave 1 participants which also participated in MoMo
I₁ … I₅: i-th category for BMI and j-th category for BMI_reported (i.e., 1 = extremely underweight, 2 = underweight, 3 = normal weight, 4 = overweight, 5 = obese)
I₆: Missing value for self-reported height and/or weight
Q_jk Prevalence rates of weight status categories j derived from self-reported height and weight according to body perception = k in KiGGS Wave 1
∝_ijk = P (BMI_measured ∈ I_i | BMI_reported ∈ I_j , BP = k)

ISSN: 1471-2458