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Normal reference for bone density in healthy Chinese children.
J Clin Densitom. 2007 Jul-Sep; 10(3):266-75.JC

Abstract

An ethnicity- and gender-specific normal reference database is necessary for the clinical dual-energy X-ray absorptiometry (DXA) assessment of skeletal status in Chinese children. We used a Lunar Prodigy DXA densitometer to measure bone mineral density (BMD), bone mineral content (BMC), and bone area (BA) at total body and subcranial skeleton for 877 healthy Chinese children (505 boys, 372 girls) aged 5-13 yr. The height-for-age, BA-for-height, and BMC-for-BA percentile curves were developed using the LMS method (L, power in Box-Cox transformation; M, median; S, coefficient of variation). We found that total body BMD and subcranial skeleton BMD were highly correlated (r=0.701-0.949), and that total body BMD was significantly higher than subcranial skeleton BMD for each gender and age group (p<0.001). No gender differences in total body and subcranial skeleton BMD were found. Total body lean mass correlated highly with total body BMC and subcranial skeleton BMD and BMC (boys: r=0.888-0.953, girls: r=0.917-0.967) and moderately with total body BMD (boys: r=0.684, girls: r=0.777). The head region accounted for 16-52% and 16-49% of the total body BMC in boys and girls, respectively, and the percentages were negatively correlated with age (boys: r=-0.824, girls: r=-0.864) and height (boys: r=-0.911, girls: r=-0.922). Regression analyses showed that age explained more variance in subcranial skeleton BMD (boys: R(2)=0.641, girls: R(2)=0.685) than in total body BMD (boys: R(2)=0.387, girls: R(2)=0.472). In summary, we have presented an ethnicity- and gender-specific densitometric normal reference database for Chinese children aged 5-13 yr. It should allow for an appropriate clinical assessment of total body bone density in Chinese children as measured by the Lunar Prodigy DXA densitometer.

Authors+Show Affiliations

Department of Nuclear Medicine, First Affiliated Hospital, Jinan University, Guangzhou, China. txh@jnu.edu.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17616412

Citation

Xu, Hao, et al. "Normal Reference for Bone Density in Healthy Chinese Children." Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry, vol. 10, no. 3, 2007, pp. 266-75.
Xu H, Chen JX, Gong J, et al. Normal reference for bone density in healthy Chinese children. J Clin Densitom. 2007;10(3):266-75.
Xu, H., Chen, J. X., Gong, J., Zhang, T. M., Wu, Q. L., Yuan, Z. M., & Wang, J. P. (2007). Normal reference for bone density in healthy Chinese children. Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry, 10(3), 266-75.
Xu H, et al. Normal Reference for Bone Density in Healthy Chinese Children. J Clin Densitom. 2007 Jul-Sep;10(3):266-75. PubMed PMID: 17616412.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Normal reference for bone density in healthy Chinese children. AU - Xu,Hao, AU - Chen,Jia-Xuan, AU - Gong,Jian, AU - Zhang,Tian-Min, AU - Wu,Qiu-Lian, AU - Yuan,Zhong-Man, AU - Wang,Jin-Ping, Y1 - 2007/07/05/ PY - 2007/03/12/received PY - 2007/05/06/revised PY - 2007/05/22/accepted PY - 2007/7/10/pubmed PY - 2007/12/19/medline PY - 2007/7/10/entrez SP - 266 EP - 75 JF - Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry JO - J Clin Densitom VL - 10 IS - 3 N2 - An ethnicity- and gender-specific normal reference database is necessary for the clinical dual-energy X-ray absorptiometry (DXA) assessment of skeletal status in Chinese children. We used a Lunar Prodigy DXA densitometer to measure bone mineral density (BMD), bone mineral content (BMC), and bone area (BA) at total body and subcranial skeleton for 877 healthy Chinese children (505 boys, 372 girls) aged 5-13 yr. The height-for-age, BA-for-height, and BMC-for-BA percentile curves were developed using the LMS method (L, power in Box-Cox transformation; M, median; S, coefficient of variation). We found that total body BMD and subcranial skeleton BMD were highly correlated (r=0.701-0.949), and that total body BMD was significantly higher than subcranial skeleton BMD for each gender and age group (p<0.001). No gender differences in total body and subcranial skeleton BMD were found. Total body lean mass correlated highly with total body BMC and subcranial skeleton BMD and BMC (boys: r=0.888-0.953, girls: r=0.917-0.967) and moderately with total body BMD (boys: r=0.684, girls: r=0.777). The head region accounted for 16-52% and 16-49% of the total body BMC in boys and girls, respectively, and the percentages were negatively correlated with age (boys: r=-0.824, girls: r=-0.864) and height (boys: r=-0.911, girls: r=-0.922). Regression analyses showed that age explained more variance in subcranial skeleton BMD (boys: R(2)=0.641, girls: R(2)=0.685) than in total body BMD (boys: R(2)=0.387, girls: R(2)=0.472). In summary, we have presented an ethnicity- and gender-specific densitometric normal reference database for Chinese children aged 5-13 yr. It should allow for an appropriate clinical assessment of total body bone density in Chinese children as measured by the Lunar Prodigy DXA densitometer. SN - 1094-6950 UR - https://www.unboundmedicine.com/medline/citation/17616412/Normal_reference_for_bone_density_in_healthy_Chinese_children_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1094-6950(07)00176-X DB - PRIME DP - Unbound Medicine ER -