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      Dyadic interactions and physical and social environment in dementia mealtime care: a systematic review of instruments

      1 , 1
      Annals of the New York Academy of Sciences
      Wiley

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          Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement.

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            Quality criteria were proposed for measurement properties of health status questionnaires.

            Recently, an increasing number of systematic reviews have been published in which the measurement properties of health status questionnaires are compared. For a meaningful comparison, quality criteria for measurement properties are needed. Our aim was to develop quality criteria for design, methods, and outcomes of studies on the development and evaluation of health status questionnaires. Quality criteria for content validity, internal consistency, criterion validity, construct validity, reproducibility, longitudinal validity, responsiveness, floor and ceiling effects, and interpretability were derived from existing guidelines and consensus within our research group. For each measurement property a criterion was defined for a positive, negative, or indeterminate rating, depending on the design, methods, and outcomes of the validation study. Our criteria make a substantial contribution toward defining explicit quality criteria for measurement properties of health status questionnaires. Our criteria can be used in systematic reviews of health status questionnaires, to detect shortcomings and gaps in knowledge of measurement properties, and to design validation studies. The future challenge will be to refine and complete the criteria and to reach broad consensus, especially on quality criteria for good measurement properties.
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              The content validity index: are you sure you know what's being reported? Critique and recommendations.

              Scale developers often provide evidence of content validity by computing a content validity index (CVI), using ratings of item relevance by content experts. We analyzed how nurse researchers have defined and calculated the CVI, and found considerable consistency for item-level CVIs (I-CVIs). However, there are two alternative, but unacknowledged, methods of computing the scale-level index (S-CVI). One method requires universal agreement among experts, but a less conservative method averages the item-level CVIs. Using backward inference with a purposive sample of scale development studies, we found that both methods are being used by nurse researchers, although it was not always possible to infer the calculation method. The two approaches can lead to different values, making it risky to draw conclusions about content validity. Scale developers should indicate which method was used to provide readers with interpretable content validity information. (c) 2006 Wiley Periodicals, Inc.
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                Author and article information

                Contributors
                Journal
                Annals of the New York Academy of Sciences
                Annals NY Academy of Science
                Wiley
                0077-8923
                1749-6632
                December 2021
                July 26 2021
                December 2021
                : 1505
                : 1
                : 23-39
                Affiliations
                [1 ]College of Nursing The University of Iowa Iowa City Iowa
                Article
                10.1111/nyas.14667
                34310706
                be89379f-2cec-4f53-8275-5119525b7693
                © 2021

                http://onlinelibrary.wiley.com/termsAndConditions#vor

                http://doi.wiley.com/10.1002/tdm_license_1.1

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