Prevalence (%) of metabolic syndrome by the degree and type of obesity (n = 3814) ^a.

<p>^a Metabolic syndrome was diagnosed by IDF criteria for adolescents; For adolescents aged 10 years to younger than 16 years, MetS was diagnosed with central obesity (WC≥90th percentile) for age and sex by the Chinese reference; and the presence of any two of the following four factors, ie. elevated BP (systolic ≥130/diastolic ≥85 mmHg), low HDL-C (<1.03 mmol/L), elevated TG (≥1.7 mmol/L ), IFG (fasting plasma glucose ³ 5.6 mmol/L). For children aged 16 years or older, MetS was diagnosed using IDF criteria for adults, ie: Central obesity (WC≥90 cm for Chinese men and ≥80 cm for Chinese women) plus any two of the following four factors: elevated BP (systolic ≥130/diastolic ≥85 mmHg), low HDL-C (<1.03 mmol/L in males and <1.29 mmol/L in females), elevated TG (≥1.7 mmol/L), IFG (fasting plasma glucose (FPG)≥5.6 mmol/L). ^b Degree of obesity was diagnosed based on International Obesity Task Force (IOTF) BMI cutoffs. ^c Type of obesity was diagnosed simultaneously by IOTF-BMI criteria and the age-,sex-specific waist circumference 90th percentile by the Chinese reference.</p

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

<p>Abbreviation: TG, triglyceride; TC, total cholesterol; IFG, impaired fasting glucose. TG, TC and fasting blood glucose were tested based on fasting finger capillary blood.</p>a<p>Overweight and obesity were diagnosed based on International Obesity Task Force (IOTF) BMI cutoffs.</p>b<p>Diagnosed 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.</p>c<p>Elevated TG was diagnosed as TG≥1.7 mmol/L.</p>d<p>Elevated TC was diagnosed as TC≥5.2 mmol/L.</p>e<p>IFG was diagnosed as glucose ≥5.6 mmol/L.</p>*<p>χ2-test, all rural and urban differences were significant, <i>P</i><0.01;</p

Metabolic disorders among 3814 Beijing children aged 10–18 years by weight status, subsample of BCAMS sample population (n = 3814).^*

<p>Abbreviation: WC, waist circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure; HDL-C, high-density lipoprotein cholesterol; FPG, fasting plasma glucose; TG: fasting serum triglyceride.</p>*<p>Within the whole BCAMS sample, a subsample of 3814 children aged 10–18 years was recruited for venipuncture blood samples. Weight status was defined for the subsample of 3814 children based on the International Obesity Task Force (IOTF) BMI cutoffs; Mean and SD were calculated using covariance analysis adjusted for age and sex.</p>a<p><i>P</i> values for trend tests across weight status groups adjusted for age and gender.</p

Logistic regression models; Odds ratio (OR) and 95%CIs of MetS and MetS component for Beijing adolescents aged 10–18 years according to the degree and type of obesity, subsample^* of BCAMS population (n = 3814).

<p>Abbreviation: HDL-C, high-density lipoprotein cholesterol; IFG, impaired fasting glucose; TG, triglyceride; BP, blood pressure; MetS, metabolic syndrome.</p>*<p>Within the whole BCAMS sample, a subsample of 3814 children aged 10–18 years was recruited for venipuncture blood samples.</p>a<p>Degree of obesity was diagnosed based on International Obesity Task Force (IOTF) BMI cutoffs; normal weight subjects were used as reference group; all models adjusted for age and gender.</p>b<p>Type of obesity was diagnosed simultaneously by IOTF-BMI criteria and the age-,sex-specific waist circumference references for Chinese children and adolescents; subjects who were neither general obesity nor central obesity were used as the reference group; all models adjusted for age and gender.</p>c<p>MetS and its components were diagnosed according to the IDF criteria for adolescents: For adolescents aged 10∼15, MetS was diagnosed with central obesity (waist circumference ≥90th percentile for age and gender by the Chinese reference; and the presence of any two of the following four factors, ie: elevated BP (systolic ≥130/diastolic ≥85 mmHg), low HDL-C (<1.03 mmol/L), elevated TG (≥1.7 mmol/L ), IFG (fasting plasma glucose ≥5.6 mmol/L). For children aged 16 years or older, MetS was diagnosed using IDF criteria for adults, ie: Central obesity (WC≥90 cm for Chinese men and ≥80 cm for Chinese women) plus any two of the following four factors: elevated BP (systolic ≥130/diastolic ≥85 mmHg), low HDL-C (<1.03 mmol/L in males and <1.29 mmol/L in females), elevated TG (≥1.7 mmol/L), IFG (fasting plasma glucose (FPG) ≥5.6 mmol/L).</p>#<p>None had the MetS component.</p

Logistic regression model: odds ratios (OR) and 95%CIs of CVD risk factors according to the degree and type of obesity among Beijing children aged 6–18 years, whole BCAMS sample (n = 19593).

<p>Abbreviation: TG, triglyceride; TC, total cholesterol; IFG, impaired fasting glucose. TG, TC and fasting blood glucose were tested based on fasting finger capillary blood.</p>a<p>Degree of obesity was diagnosed based on International Obesity Task Force (IOTF) BMI cutoffs; Subjects defined as normal weight was used as reference group, and controlled for age and sex.</p>b<p>Type of obesity was diagnosed simultaneously by IOTF-BMI criteria and the age-,sex-specific waist circumference references for Chinese children and adolescents; Subjects who did not have general obesity or central obesity were used as the reference group.</p>c<p>Hypertension was defined as systolic and/or diastolic blood pressure ≥95th percentile, the new Chinese reference.</p>d<p>Elevated TG was defined as TG≥1.7 mmol/L.</p>e<p>Elevated TC was defined as TC≥5.2 mmol/L.</p>f<p>IFG was defined as the fasting capillary glucose l≥5.6 mmol/L.</p>*<p>None had this metabolic disorder.</p