Wolinsky F D, Prendergast J M, Miller D K, Coe R M, Chavez M N
Center for Health Services Education and Research, St. Louis University Medical Center, MO 63104.
Am J Prev Med. 1985 Mar-Apr;1(2):53-9.
We used data from a two-stage random sample of 401 noninstitutionalized elderly individuals residing in 18 census tracts in south-central metropolitan St. Louis to establish the reliability and validity of a 16-item nutritional risk measure. Reliability analysis yielded a Cronbach's alpha of 0.603. Concurrent predictive validity was demonstrated by the prediction of physician, emergency room, and hospital use. Individuals with high scores displayed a consistent pattern of higher rates of known nutrition-related problems and their sequelae than did those with low scores, providing evidence of known groups validity. Statistical correlations with components of an established theoretical model of the elderly's health and illness behavior demonstrate preliminary support for construct validity. The advantages of our nutritional risk measure include its ease of administration and telephone portability.
我们使用了来自居住在圣路易斯中南部大都市18个人口普查区的401名非机构化老年人的两阶段随机样本数据，以确立一项包含16个项目的营养风险测量方法的可靠性和有效性。可靠性分析得出的克朗巴赫α系数为0.603。通过对医生诊疗、急诊室就诊和住院情况的预测，证明了同时预测效度。高分个体比低分个体呈现出已知的营养相关问题及其后遗症发生率更高的一致模式，这为已知群体效度提供了证据。与老年人健康和疾病行为既定理论模型的组成部分之间的统计相关性，为结构效度提供了初步支持。我们的营养风险测量方法的优点包括易于实施和便于通过电话进行操作。
