Bradley J L, Brown J E, Himes J H
Public Health Nutrition, Division of Epidemiology, University of Minnesota School of Public Health, Minneapolis 55454-1015, USA.
Am J Hum Biol. 2001 Mar-Apr;13(2):275-9. doi: 10.1002/1520-6300(200102/03)13:2<275::AID-AJHB1039>3.0.CO;2-3.
This study evaluates the reliability and validity of parental measurements of infant size, using illustrated instructions and simple measuring tools. Following pilot tests, final methods were evaluated on a sample of 28 parents (26 mothers and 2 fathers) of infants from 1 to 6 weeks of age. Parents independently measured twice the infant's head circumference (HC), mid-upper arm circumference (MUAC), abdominal circumference (AC), and recumbent length (RL). Infants were also measured twice by a trained observer. Mean parental measures were correlated (intraclass R) with the observer criterion measures at the levels of 0.81 for RL, 0.70 for AC, 0.80 for MUAC, and 0.94 for HC. Relative differences in the means for measurements obtained by parents and the trained observer were small, ranging from 0.3% for HC and RL, to 3.8% for AC. Intraclass correlations of reliability between the two parental measurements ranged from R = 0.84 for MUAC to 0.96 for RL. Given the reliability and validity of the results, the methods tested yield measurements that are suitable for ranking individuals and for use in group-level analyses, and at least in the case of head circumference, for individual-level analyses.
本研究使用图文说明和简单测量工具，评估父母对婴儿尺寸测量的可靠性和有效性。经过预试验后，对28名1至6周龄婴儿的父母（26名母亲和2名父亲）进行抽样，评估最终方法。父母独立测量婴儿的头围（HC）、上臂中部周长（MUAC）、腹围（AC）和卧位身长（RL）各两次。婴儿也由一名训练有素的观察者测量两次。父母测量的平均值与观察者的标准测量值的组内相关系数（intraclass R）分别为：RL为0.81、AC为0.70、MUAC为0.80、HC为0.94。父母和训练有素的观察者所获得测量值的均值相对差异较小，HC和RL为0.3%，AC为3.8%。两次父母测量之间的可靠性组内相关系数范围从MUAC的R = 0.84到RL的0.96。鉴于结果的可靠性和有效性，所测试的方法得出的测量值适用于个体排名和组水平分析，至少对头围而言，也适用于个体水平分析。
