Low Diagnostic Accuracy of Body Mass Index-Based and Waist Circumference-Based References of Childhood Overweight and Obesity in Identifying Overfat among Chinese Children and Adolescents

Table 3

Prevalence rates of obesity and overweight estimated by existing definitions for childhood overweight and obesity.

	%BF	BMI based definitions								WC based definitions
		IOTF-BMI		CDC-BMI		WHO-BMI		WGOC-BMI		WHtR	WC
	Overfat	OB	OB; & OW	OB	OB; & OW	OB	OB; & OW	OB	OB; & OW	OB; & OW	OB; & OW
Boys; (n=1135)	24.4%; (21.9-26.9)	8.5%; (6.9-10.1)	28.0%; (25.4-30.6)	12.4%; (10.5-14.3)	27.4%; (24.8-30.0)	14.5%; (12.5-16.6)	33.4%; (30.7-36.1)	13.3%; (11.3-15.3)	30.5%; (27.8-33.2)	35.4%; (32.6-38.2)	22.0%; (19.6-24.4)
Girls; (n=999)	34.5%; (31.6-37.4)	4.4%; (3.1-5.7)	20.0% (17.5-22.5)	6.6%; (5.1-8.1)	19.2% (16.8-21.6)	6.9% (5.3-8.5)	22.3% (19.7-24.5)	9.7% (7.9-11.5)	21.8% (19.2-24.4)	32.0%; (29.1-34.9)	24.0%; (21.4-26.7)

Note: all data are presented as mean (95% confidential interval, 95%CI).
OB & OW, overweight and obesity; BMI, body mass index; %BF, body fat percentage measuring by BIA; WC, waist circumference; WHtR, waist-for-height ratio.
IOTF-BMI, International Obesity Task Force BMI reference; CDC-BMI, US Centers for Disease Control and Prevention BMI reference; WHO-BMI, World Health Organization reference; WGOC-BMI, Working Group on Obesity in China BMI reference.