Assessment of response shift using two structural equation modeling techniques.
Assessment of response shift using two structural equation modeling techniques.
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DOI：
10.1007/s11136-012-0171-1
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发表时间：
2013-04
影响因子：
3.5
通讯作者：
Kauf, Teresa L.
中科院分区：
文献类型：
--
作者：
Gandhi, Pranav K.;Ried, L. Douglas;Huang, I-Chan;Kimberlin, Carole L.;Kauf, Teresa L.
关键词：
ObjectiveTo identify response shift using two structural equation modeling (SEM) techniques.Study design and settingHypertensive patients (n= 909) with coronary artery disease (CAD) completed SF-36 surveys at both baseline and 1-year follow-up. Response shift was identified using Oort and Schmitt SEM techniques. The type of response shift linked to changes in various parameters of the SEM measurement model is defined differently for both SEM approaches. Effect sizes were calculated for the impact of response shift on the change of SF-36 domain scores when using the Oort approach.ResultsBoth Oort and Schmitt SEM approaches identified response shift only in the SF-36 physical functioning (PF) scale. The effect size of recalibration on the change of PF domain scores when using the Oort approach was −0.12.ConclusionThis study showed that hypertensive patients with CAD experienced a response shift over a 1-year period. Both the SEM approaches identified response shift (uniform recalibration using the Oort approach and recalibration using the Schmitt approach); however, both approaches use different parameters to define and test response shift. We found that either the variation in analytic methods or the sample used may influence the identification and type of response shift.
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