青少年简短钙评估工具的开发与评估

Development and evaluation of a brief calcium assessment tool for adolescents.

作者信息

Yang Yoon Jung, Martin Berdine R, Boushey Carol J

机构信息

Department of Medicine, College of Medicine, Hanyang University, Seoul, Korea.

出版信息

J Am Diet Assoc. 2010 Jan;110(1):111-5. doi: 10.1016/j.jada.2009.10.009.

DOI:10.1016/j.jada.2009.10.009

PMID:20102836

Abstract

Adolescence is a critical time to achieve peak bone mass. However, results of national surveys suggest that young people are not consuming adequate amounts of calcium. A simple calcium self-assessment tool with low respondent burden could provide immediate feedback that may encourage calcium consumption. This study used data reduction methods to shorten a previously evaluated calcium-specific food frequency questionnaire to the 15-item Brief Calcium Assessment Tool (BCAT). Sample 1 was a cross-sectional sample of 1,426 students in sixth and 11th grades (April 2002 to February 2003) who completed the calcium food frequency questionnaire. Sample 1 was divided into two matching samples (Group 1 and Group 2). Sample 2 was a cross-sectional sample of 745 girls in sixth grade that completed the calcium food frequency questionnaire (July 2002 to February 2005). The development of the BCAT and its calcium score used two unique samples (Group 1 of Sample 1 and Sample 2) followed by confirmation of the score in a second sample (Group 2 of Sample 1). Bone mineral content was measured among the girls in Sample 2. The BCAT calcium score was associated with total hip bone mineral content (beta=.014, P=0.003) and femoral neck bone mineral content (beta=.002, P=0.006) while adjusting for covariates. Sample 3 (n=265), a subsample of Sample 2, completed bone measures 12 months later. The BCAT calcium score at the baseline was a predictor of total body bone mineral content (beta=.279, P=0.041) at 12 months. The correlation of BCAT scores 1 week apart was .76 (P<0.001) among a convenience sample of 41 boys and girls aged 9 to 17 years (October 2005 to December 2005). The BCAT took about 5 minutes to complete. The significant relationship between bone mass and the BCAT calcium score supports the use of BCAT as a tool to assess food calcium intake among adolescents, especially Asian, Hispanic, and non-Hispanic white girls. The reliability and low respondent burden of the BCAT make the tool useful for large-scale studies and community-based programs.

摘要

青春期是实现峰值骨量的关键时期。然而，全国性调查结果表明，年轻人钙摄入量不足。一种应答负担低的简单钙自我评估工具能够提供即时反馈，这可能会促进钙的摄入。本研究采用数据缩减方法，将先前评估过的特定钙食物频率问卷缩短为15项的简明钙评估工具（BCAT）。样本1是一个横断面样本，包含1426名六年级和十一年级学生（2002年4月至2003年2月），他们完成了钙食物频率问卷。样本1被分为两个匹配样本（第1组和第2组）。样本2是一个横断面样本，包含745名六年级女生（2002年7月至2005年2月），她们完成了钙食物频率问卷。BCAT及其钙得分的制定使用了两个独特样本（样本1的第1组和样本2），随后在第二个样本（样本1的第2组）中对得分进行了确认。对样本2中的女生测量了骨矿物质含量。在调整协变量后，BCAT钙得分与全髋骨矿物质含量（β = 0.014，P = 0.003）和股骨颈骨矿物质含量（β = 0.002，P = 0.006）相关。样本3（n = 265）是样本2的一个子样本，在12个月后完成了骨测量。基线时的BCAT钙得分是12个月时全身骨矿物质含量（β = 0.279，P = 0.041）的一个预测指标。在一个由41名9至17岁男孩和女孩组成的便利样本（2005年10月至2005年12月）中，相隔1周的BCAT得分的相关性为0.76（P < 0.001）。完成BCAT大约需要5分钟。骨量与BCAT钙得分之间的显著关系支持将BCAT用作评估青少年尤其是亚洲、西班牙裔和非西班牙裔白人女孩食物钙摄入量的工具。BCAT的可靠性和低应答负担使其适用于大规模研究和社区项目。