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Longitudinal construct validity: establishment of clinical meaning in patient evaluative instruments.
This methodology need not be a strict protocol of constructs and evaluative instruments, but the field desperately needs a general framework on which to base all future studies.
Evaluative instruments measure longitudinal change, typically the effects of treatment.
There are several evaluative instruments dealing with neuropathic pain [ 6- 9].
Evaluative instruments are required to give consistent measurements (reliability) and be sensitive to change (responsiveness) [ 3].
The validation process must consider the measurement properties that are important for evaluative instruments; this is test-retest reliability, longitudinal validity, and responsiveness.
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This highlights the importance of clarifying the objectives of PHC evaluation before choosing an evaluative instrument.
Aims: The purpose of this study was to develop and validate an easily used disease-specific quality of life (QOL) measure for patients with chronic lower limb ischemia and to design an evaluative instrument, responsive to withinsubject change, that adds to clinical measures of outcome when comparing treatment options in the management of lower limb ischemia.
Construction of an efficient evaluative instrument for myasthenia gravis: the MG composite.
In this way, it provides a common evaluative instrument with which to compare multiple proposals and project plans and to summarize the results of such analysis.
The 15-item myasthenia gravis quality of life scale (MG-QOL15) is an HRQOL evaluative instrument specific to patients with myasthenia gravis (MG) that was designed to be easy to administer and interpret.
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