Tucker Graeme, Adams Robert, Wilson David
SA Health, 11 Hindmarsh Square, Adelaide, SA, 5000, Australia.
Discipline of Medicine, University of Adelaide, Adelaide, SA, Australia.
Qual Life Res. 2016 Feb;25(2):267-274. doi: 10.1007/s11136-015-1083-7. Epub 2015 Sep 28.
To examine the validity of using the same scoring coefficients across countries for the SF-12.
We test the equality of scoring coefficients derived for a contraction of the SF-36, the Short Form 12 (SF-12), using a large international database drawn from nine countries, to test equality between Australia and twelve other country/language groups. First, we checked that the theoretical structure of the SF-12 as set out by Ware and colleagues, but including a correlation between physical and mental health, provided an adequate fit to the data for each country/language group in a confirmatory factor analysis. We then compared Australia to all of these country/language groups in multiple-group models to assess whether a model producing common factor score coefficients provided an adequate fit to the data. We also derived Chi-squared tests for the differences between the restricted and unrestricted models, to test the equality of the factor score coefficients across countries.
We found that the theoretical structure of the SF-12, with a correlation between physical and mental health, provides an adequate fit to the data for all country/language groups except Hungary. Further, all the unrestricted multiple-group models provide an adequate fit to the data. In contrast, none of the multiple-group models restricted to common parameters provide an adequate fit to the data. The significance tests confirm that the constraints on parameter values produce significantly different models to the unrestricted models.
We conclude that researchers should derive their own country-specific scoring coefficients for physical and mental health summary scores.
检验在不同国家使用相同的SF-12评分系数的有效性。
我们使用来自九个国家的大型国际数据库，测试从SF-36简表（即简短健康调查问卷12项版，SF-12）推导得出的评分系数的相等性，以检验澳大利亚与其他十二个国家/语言组之间的相等性。首先，我们通过验证性因素分析，检查了Ware及其同事提出的SF-12理论结构（包括身心健康之间的相关性）是否能充分拟合每个国家/语言组的数据。然后，我们在多组模型中将澳大利亚与所有这些国家/语言组进行比较，以评估产生共同因素得分系数的模型是否能充分拟合数据。我们还对受限模型和非受限模型之间的差异进行卡方检验，以检验各国因素得分系数的相等性。
我们发现，除匈牙利外，SF-12的理论结构（身心健康之间存在相关性）能充分拟合所有国家/语言组的数据。此外，所有非受限多组模型均能充分拟合数据。相比之下，所有限制为共同参数的多组模型均不能充分拟合数据。显著性检验证实，对参数值的约束产生的模型与非受限模型存在显著差异。
我们得出结论，研究人员应为身心健康汇总得分推导各自国家特定的评分系数。
