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European Journal of Physical and Rehabilitation Medicine 2018 February;54(1):110-7

DOI: 10.23736/S1973-9087.17.04784-0

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English

Standardized reporting of functioning information on ICF-based common metrics

Birgit PRODINGER 1, 2, 3 , Alan TENNANT 1, 2, Gerold STUCKI 1, 2, 3

1 Department of Health Sciences and Health Policy, Faculty of Humanities and Social Sciences, University of Lucerne, Lucerne, Switzerland; 2 Swiss Paraplegic Research (SPF), Nottwil, Switzerland; 3 ICF Research Branch, a Cooperation Partner within the WHO Collaborating Center for the Family of International Classifications in Germany (at DIMDI), Nottwil, Switzerland


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BACKGROUND: In clinical practice and research a variety of clinical data collection tools are used to collect information on people’s functioning for clinical practice and research and national health information systems. Reporting on ICF-based common metrics enables standardized documentation of functioning information in national health information systems. The objective of this methodological note on applying the ICF in rehabilitation is to demonstrate how to report functioning information collected with a data collection tool on ICF-based common metrics. We first specify the requirements for the standardized reporting of functioning information. Secondly, we introduce the methods needed for transforming functioning data to ICF-based common metrics. Finally, we provide an example.
METHODS: The requirements for standardized reporting are as follows: 1) having a common conceptual framework to enable content comparability between any health information; and 2) a measurement framework so that scores between two or more clinical data collection tools can be directly compared. The methods needed to achieve these requirements are the ICF Linking Rules and the Rasch measurement model. Using data collected incorporating the 36-item Short Form Health Survey (SF-36), the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0), and the Stroke Impact Scale 3.0 (SIS 3.0), the application of the standardized reporting based on common metrics is demonstrated.
RESULTS: A subset of items from the three tools linked to common chapters of the ICF (d4 Mobility, d5 Self-care and d6 Domestic life), were entered as “super items” into the Rasch model. Good fit was achieved with no residual local dependency and a unidimensional metric. A transformation table allows for comparison between scales, and between a scale and the reporting common metric.
CONCLUSIONS: Being able to report functioning information collected with commonly used clinical data collection tools with ICF-based common metrics enables clinicians and researchers to continue using their tools while still being able to compare and aggregate the information within and across tools.


KEY WORDS: International Classification of Functioning, Disability and Health - Rehabilitation - Delivery of health care

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