Article: Waist circumference and body mass index in Chinese children: Cutoff values for predicting cardiovascular risk factors

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TitleWaist circumference and body mass index in Chinese children: Cutoff values for predicting cardiovascular risk factors
AuthorsSung, RYT2 3
Yu, CCW1
Choi, KC3
McManus, A1
Li, AMC3
Xu, SLY3
Chan, D3
Lo, AFC3
Chan, JCN3
Fok, TF3
KeywordsBMI
Cardiovascular risk factors
Children
Chinese
Hong Kong
Waist circumference
Issue Date2007
PublisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/ijo/
CitationInternational Journal Of Obesity, 2007, v. 31 n. 3, p. 550-558 [How to Cite?]
DOI: http://dx.doi.org/10.1038/sj.ijo.0803452
AbstractBackground: Body mass index (BMI) and waist circumference (WC) correlate with cardiovascular (CV) risk factors in childhood which track into adulthood. WC provides a measure of central obesity, which has been specifically associated with CV risk factors. Reference standards for WC, and for WC and BMI risk threshold values are not established in Chinese children. Objectives: To construct reference percentile charts of WC, establish relationships between WC, BMI and other risk factors, and propose WC and BMI threshold values predictive of CV risk factors in Hong Kong ethnic Chinese children. Methods: Weight, height, waist and hip circumference were measured in 2593 (52% boys, 47% girls) randomly sampled Hong Kong school children aged 6-12 years. In 958 of these and 97 additional overweight children (n=1055), the relationships between WC, BMI, waist/hip and waist/height ratio and six age-adjusted CV risk factors (>85% percentile levels of blood pressure (BP), fasting triglycerides, low-density lipoprotein (LDL) cholesterol, glucose and insulin levels, and <15% percentile levels of high-density lipoprotein (HDL) cholesterol) were studied. Receiver-operating characteristic analysis was employed to derive optimal age-adjusted sex-specific WC and BMI thresholds for predicting these measures of risk. Results: WC percentiles were constructed. WC correlated slightly more than BMI with CV risk factors and most strongly with insulin and systolic BP, but poorly or not with LDL and glucose. Optimal WC and BMI risk thresholds for predicting four of these six CV risk factors were ca. the 85th percentiles (sensitivities ∼0.8, specificities ∼0.87) with age-specific cutoff values in girls/boys from ∼57/58 to ∼71/76 cm and 17/18 to 22/23 kg/m 2. Conclusion: These are the first set of WC reference data for Chinese children. WC risk cutoff values are proposed which, despite a smaller waist in Chinese children, are similar to those reported for American children. WC percentiles may reflect population risk. © 2007 Nature Publishing Group All rights reserved.
ISSN0307-0565
2011 Impact Factor: 4.691
2011 SCImago Journal Rankings: 0.429
DOIhttp://dx.doi.org/10.1038/sj.ijo.0803452
ISI Accession Number IDWOS:000244480100023
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorSung, RYT
dc.contributor.authorYu, CCW
dc.contributor.authorChoi, KC
dc.contributor.authorMcManus, A
dc.contributor.authorLi, AMC
dc.contributor.authorXu, SLY
dc.contributor.authorChan, D
dc.contributor.authorLo, AFC
dc.contributor.authorChan, JCN
dc.contributor.authorFok, TF
dc.date.accessioned2010-09-06T09:35:14Z
dc.date.available2010-09-06T09:35:14Z
dc.date.issued2007
dc.description.abstractBackground: Body mass index (BMI) and waist circumference (WC) correlate with cardiovascular (CV) risk factors in childhood which track into adulthood. WC provides a measure of central obesity, which has been specifically associated with CV risk factors. Reference standards for WC, and for WC and BMI risk threshold values are not established in Chinese children. Objectives: To construct reference percentile charts of WC, establish relationships between WC, BMI and other risk factors, and propose WC and BMI threshold values predictive of CV risk factors in Hong Kong ethnic Chinese children. Methods: Weight, height, waist and hip circumference were measured in 2593 (52% boys, 47% girls) randomly sampled Hong Kong school children aged 6-12 years. In 958 of these and 97 additional overweight children (n=1055), the relationships between WC, BMI, waist/hip and waist/height ratio and six age-adjusted CV risk factors (>85% percentile levels of blood pressure (BP), fasting triglycerides, low-density lipoprotein (LDL) cholesterol, glucose and insulin levels, and <15% percentile levels of high-density lipoprotein (HDL) cholesterol) were studied. Receiver-operating characteristic analysis was employed to derive optimal age-adjusted sex-specific WC and BMI thresholds for predicting these measures of risk. Results: WC percentiles were constructed. WC correlated slightly more than BMI with CV risk factors and most strongly with insulin and systolic BP, but poorly or not with LDL and glucose. Optimal WC and BMI risk thresholds for predicting four of these six CV risk factors were ca. the 85th percentiles (sensitivities ∼0.8, specificities ∼0.87) with age-specific cutoff values in girls/boys from ∼57/58 to ∼71/76 cm and 17/18 to 22/23 kg/m 2. Conclusion: These are the first set of WC reference data for Chinese children. WC risk cutoff values are proposed which, despite a smaller waist in Chinese children, are similar to those reported for American children. WC percentiles may reflect population risk. © 2007 Nature Publishing Group All rights reserved.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationInternational Journal Of Obesity, 2007, v. 31 n. 3, p. 550-558 [How to Cite?]
DOI: http://dx.doi.org/10.1038/sj.ijo.0803452
dc.identifier.citeulike828789
dc.identifier.doihttp://dx.doi.org/10.1038/sj.ijo.0803452
dc.identifier.epage558
dc.identifier.hkuros129375
dc.identifier.isiWOS:000244480100023
dc.identifier.issn0307-0565
2011 Impact Factor: 4.691
2011 SCImago Journal Rankings: 0.429
dc.identifier.issue3
dc.identifier.openurl
dc.identifier.pmid16953258
dc.identifier.scopuseid_2-s2.0-33847305480
dc.identifier.spage550
dc.identifier.urihttp://hdl.handle.net/10722/87845
dc.identifier.volume31
dc.languageeng
dc.publisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/ijo/
dc.publisher.placeUnited Kingdom
dc.relation.ispartofInternational Journal of Obesity
dc.relation.referencesReferences in Scopus
dc.subjectBMI
dc.subjectCardiovascular risk factors
dc.subjectChildren
dc.subjectChinese
dc.subjectHong Kong
dc.subjectWaist circumference
dc.titleWaist circumference and body mass index in Chinese children: Cutoff values for predicting cardiovascular risk factors
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. Prince of Wales Hospital Hong Kong
  3. Chinese University of Hong Kong