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亚洲妇女骨质疏松评价工具的应用效果研究
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摘要
目的 探讨亚洲妇女骨质疏松评价工具(OSTA)用于筛选我国大陆地区围绝经期及绝经后妇女的骨质疏松危险性的应用价值。同时采用判别分析探索新的预测公式,以提高筛选骨质疏松危险性的准确率。
     方法 根据L.K.H.Koh等研究者提出的OSTA计算公式和筛选临界值,计算每个被测者的OSTA得分,并划分为三个危险等级,与双能X线骨密度仪(DXA)的判定结果进行对比分析。利用灵敏度、特异度、kappa值指标寻找OSTA的合适临界点,以适用于我国大陆地区围绝经期及绝经后的妇女进行骨质疏松危险性的筛选。采用Bayes线性判别分析提出新的预测公式,并利用一系列评价指标及ROC曲线等与OSTA进行比较。
     结果 按照L.K.H.Koh等研究者提出的筛选临界值,OSTA应用于中国大陆地区围绝经期及绝经后的妇女时,其判定结果与DXA的差异较大,两法一致性较差。本研究根据筛检指标并结合临床实际需要,建议当OSTA应用于中国大陆地区围绝经期及绝经后的妇女时,以OSTA≥12判为低危险性人群,OSTA≤-2判为高危险性人群,-2<OSTA<2判为中度危险性人群。通过Bayes线性判别分析,本研究提出了筛选我国大陆地区40~64岁妇女骨质疏松危险性的新公式。新公式与OSTA相比,各有利弊,但两者与DXA的
Objective To evaluate the application value of OSTA in Chinese peri-menopausal and post-menopausal women. To explore a new assessment tool for Chinese peri-menopausal and post-menopausal women under 65 years old which expected to have a higher accuracy than OSTA.
    Methods According to the equation and original cutpoints that developed by L. K. H. Koh and other researchers, each object was calculated a score of OSTA and classified into three groups(the normal, the osteopenia and the osteoporosis ). A series of screening indexes, such as sensitivity, specificity, kappa value, were employed to compare and analyze the diagnosis results of DXA and OSTA. Bayes discriminant analysis was adopted to find a new assessment equation. The screening indexes and ROC curve were used to evaluate the effect of the new equation.
    Results In terms of Chinese peri-menopausal and post-menopausal women, the difference of the diagnosis results between DXA and OSTA was obvious. According to the screening indexes and the demand of clinical practice, the new cutpoints of OSTA were brought up. We suggested, as far as Chinese peri-menopausal and post-menopausal women, regarding the OSTA≥2 as the low risk,
引文
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