Establishing measurement invariance: English and Spanish Paediatric Asthma Quality of Life Questionnaire.
Establishing measurement invariance: English and Spanish Paediatric Asthma Quality of Life Questionnaire.
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DOI：
10.1097/nnr.0b013e3182544750
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发表时间：
2012-05
期刊：
影响因子：
2.5
通讯作者：
Cook SW
中科院分区：
文献类型：
--
作者：
Sousa KH;West SG;Moser SE;Harris JA;Cook SW
注册护士和护士研究人员经常使用问卷来衡量病人的结果。当使用相对同质的样本开发问卷或其他多项工具时，即使是心理测量学上开发良好的工具对新人群的适用性也会受到质疑。通过两个群体对测量项目、结构或两者的意义的理解差异，可以将偏差或缺乏等效性引入工具。解释测量不变性，并说明如何使用儿童哮喘生活质量问卷（PAQLQ）的英语和西班牙语版本进行测试。从凤凰城儿童医院呼吸机的607名儿童的样本被选为这项分析。年龄为6至18岁; 61.2%的人用西班牙语完成了PAQLQ。使用多组验证性因素分析，一系列的分层嵌套模型，测量不变性的测试，证明。在评估每个模型在每个阶段的拟合充分性时，使用χ2检验和拟合优度指数。单因素模型的测量不变性检验表明，英文和西班牙文版的量表符合测量不变性的标准。达到严格不变性水平（组间因子载荷、截距和残差方差相等）。验证性因素分析用于评估测量工具的结构完整性;多个验证性因素分析用于评估不同组之间的测量不变性，并将数据标记为有效或无效。PAQLQ是一种广泛使用的工具，有证据支持信度和效度分别用于英语和西班牙语组。评估测量仪器的传统方法并不彻底，本文展示了一种成熟的方法，可以在人群之间进行自信的比较。
Registered nurses and nurse researchers often use questionnaires to measure patient outcomes. When questionnaires or other multiple item instruments have been developed using a relatively homogeneous sample, the suitability of even a psychometrically well-developed instrument for the new population comes into question. Bias or lack of equivalence can be introduced into instruments through differences in perceptions of the meaning of the measured items, constructs, or both, in the two groups. To explain measurement invariance and illustrate how it can be tested using the English and Spanish versions of the Paediatric Asthma Quality of Life Questionnaire (PAQLQ). A sample of 607 children from the Phoenix Children's Hospital Breathmobile was selected for this analysis. Ages were 6 to 18 years in age; 61.2% completed the PAQLQ in Spanish. Testing measurement invariance using multiple group confirmatory factor analysis, a series of hierarchical nested models, is demonstrated. In assessing the adequacy of the fit of each model at each stage, both χ2 tests and goodness-of-fit indexes were used. The test of measurement invariance for the one-factor model showed that the English and Spanish versions of the scale met the criteria for measurement invariance. The level of strict invariance (equal factor loadings, intercepts, and residual variances between groups) was achieved. Confirmatory factor analysis is used to evaluate the structural integrity of a measurement instrument; multiple confirmatory factor analyses are used to assess measurement invariance across different groups, and to stamp the data as valid or invalid. The PAQLQ, a widely used instrument having evidence to support reliability and validity was used separately in English- and Spanish-speaking groups. Traditional methods for evaluating measurement instruments have been less than thorough, and this paper demonstrates a well-developed approach allowing for confident comparisons between populations.