Table 1. Prevalence (%) of obesity and metabolic disorders among Beijing children aged 6–18 years, whole BCAMS sample. population.

	All			Children aged 6–9 yrs			Adolescents aged 10–18 yrs
	Total	Urban	Rural*	Total	Urban	Rural*	Total	Urban	Rural*
Sample size	19593	9998	9595	5081	2493	2588	14512	7505	7007
Degree of obesitya
Overweight (not obese)	13.6	17.3	9.7	11.2	14.6	8.0	14.4	18.2	10.3
Obese	5.8	7.4	4.1	6.3	8.5	4.3	5.6	7.0	4.1
Elevated blood pressureb
High-normal	9.0	8.4	9.7	8.3	7.1	9.4	9.3	8.8	9.8
Hypertension	8.5	8.1	8.9	10.4	8.8	11.9	7.8	7.8	7.9
Elevated TGc	8.8	9.5	8.1	6.0	5.7	6.2	9.8	10.7	8.8
Elevated TCd	1.2	1.6	0.8	1.3	1.5	1.0	1.2	1.6	0.7
IFGe	2.5	3.1	2.0	1.9	1.6	2.2	2.8	3.6	1.9

Abbreviation: TG, triglyceride; TC, total cholesterol; IFG, impaired fasting glucose. TG, TC and fasting blood glucose were tested based on fasting finger capillary blood.

^aOverweight and obesity were diagnosed based on International Obesity Task Force (IOTF) BMI cutoffs.

^bDiagnosed by systolic and/or diastolic (K4) blood pressure ≥90th percentile for age and sex from the blood pressure reference standards for Chinese children and adolescents. High-normal was defined as systolic and/or diastolic blood pressure ≥90th–<95th percentile; hypertension ≥95th percentile for age and gender.

^cElevated TG was diagnosed as TG≥1.7 mmol/L.

^dElevated TC was diagnosed as TC≥5.2 mmol/L.

^eIFG was diagnosed as glucose ≥5.6 mmol/L.

^*χ2-test, all rural and urban differences were significant, P<0.01;