Barbara Kollerits

Linking health-status measurements to the International Classification of Functioning, Disability and Health

With the approval of the International Classification of Functioning, Disability and Health by the World Health Assembly in May 2001, the concurrent use of both health-status measures and the International Classification of Functioning, Disability and Health is expected. It is therefore important to understand the relationship between these two concepts. The objective of this paper is to provide a systematic and standardized approach when linking health-status measures to the International Classification of Functioning, Disability and Health. The specific aims are to develop rules, to test their reliability and to illustrate these rules with examples. Ten linking rules and an example of their use are presented in this paper. The percentage agreement between two health professionals for 8 health-status instruments tested is also presented. A high level of agreement between the health professionals reflects that the linking rules established in this study allow the sound linking of items from health-status measures to the International Classification of Functioning, Disability and Health.

IDENTIFICATION OF RELEVANT ICF CATEGORIES IN PATIENTS WITH CHRONIC HEALTH CONDITIONS: A DELPHI EXERCISE

OBJECTIVES To identify the most typical and relevant categories of the International Classification of Functioning, Disability and Health (ICF) for patients with low back pain, osteoporosis, rheumatoid arthritis, osteoarthritis, chronic generalized pain, stroke, depression, obesity, chronic ischaemic heart disease, obstructive pulmonary disease, diabetes mellitus, and breast cancer. METHODS An international expert survey using the Delphi technique was conducted. Data were collected in 3 rounds. Answers were linked to the ICF and analysed for the degree of consensus. RESULTS Between 21 (osteoporosis, chronic ischaemic heart disease, and obstructive pulmonary disease) and 43 (stroke) experts responded in each of the conditions. In all conditions, with the exception of depression, there were categories in all ICF components that were considered typical and/or relevant by at least 80% of the responders. While all conditions had a distinct typical spectrum of relevant ICF categories, there were also some common relevant categories throughout the majority of conditions. CONCLUSION Lists of ICF categories that are considered relevant and typical for specific conditions by international experts could be created. This is an important step towards identifying ICF Core Sets for chronic conditions.

Validation of the International Classification of Functioning, Disability and Health (ICF) Core Set for rheumatoid arthritis from the patient perspective using focus groups

Functioning is recognized as an important study outcome in rheumatoid arthritis (RA). The Comprehensive ICF Core Set for RA is an application of the International Classification of Functioning, Disability and Health (ICF) of the World Health Organisation with the purpose of representing the typical spectrum of functioning of patients with RA. To strengthen the patient perspective, persons with RA were explicitly involved in the validation of the Comprehensive ICF Core Set for RA using qualitative methodology. The objective of the study was twofold: to come forward with a proposal for the most appropriate methodology to validate Comprehensive ICF Core Sets from the patient perspective; and to add evidence to the validation of the Comprehensive ICF Core Set for RA from the perspective of patients. The specific aims were to explore the aspects of functioning and health important to patients with RA using two different focus group approaches (open approach and ICF-based approach) and to examine to what extent these aspects are represented by the current version of the Comprehensive ICF Core Set for RA. The sampling of patients followed the maximum variation strategy. Sample size was determined by saturation. The focus groups were digitally recorded and transcribed verbatim. The meaning condensation procedure was used for the data analysis. After qualitative data analysis, the resulting concepts were linked to ICF categories according to established linking rules. Forty-nine patients participated in ten focus groups (five in each approach). Of the 76 ICF categories contained in the Comprehensive ICF Core Set for RA, 65 were reported by the patients based on the open approach and 71 based on the ICF-based approach. Sixty-six additional categories (open approach, 41; ICF-based approach, 57) that are not covered in the Comprehensive ICF Core Set for RA were raised. The existing version of the Comprehensive ICF Core Set for RA could be confirmed almost entirely by the two different focus group approaches applied. Focus groups are a highly useful qualitative method to validate the Comprehensive ICF Core Set for RA from the patient perspective. The ICF-based approach seems to be the most appropriate technique.

Content comparison of health-related quality of life measures used in stroke based on the international classification of functioning, disability and health (ICF): a systematic review.

ObjectiveTo examine and compare the contents of health-related quality of life (HRQoL) measures used in stroke, based on the ICF as the frame of reference.DesignWe conducted a systematic literature review to select current generic and condition-specific HRQoL measures applied in stroke. We examined the contents of the selected measures by linking the concepts within the instruments’ items to the ICF.ResultsThe systematic literature review resulted in the selection of six generic and seven stroke-specific HRQoL measures. Within the selected instruments we identified 979 concepts. To map these concepts, we used 200 different ICF categories. None of the ICF categories is contained in all of the instruments. The most frequently used category is ‘b152 Emotional functions’ contained in 53 items from 10 instruments. Stroke-specific measures more often address ‘Mental functions’, while the selected generic instruments more often include Environmental Factors.DiscussionThe present study provides an overview on current HRQoL measures in stroke with respect to their covered contents and provides valuable information to facilitate the selection of appropriate instruments for specific purposes in clinical as well as research settings.

Content comparison of osteoporosis-targeted health status measures in relation to the International Classification of Functioning, Disability and Health (ICF)

The most frequently used instruments for health-related quality of life (HRQL) in patients with osteoporosis are the Quality of Life Questionnaire of the European Foundation for Osteoporosis (QUALEFFO-41) and the Osteoporosis Assessment Questionnaire (OPAQ 2.0 and OPAQ SV). Since HRQL- and International Classification of Functioning, Disability and Health (ICF)-based approaches have both strengths and weaknesses, it is expected that they will be used simultaneously in clinical practice and research. Therefore, we investigated the relationship between osteoporosis-targeted instruments and the ICF. All three selected instruments cover body functions, including pain in back and emotional functions. Sleep functions and energy are represented in the QUALEFFO-41 and OPAQ 2.0 but not in the OPAQ SV. Body structures and environmental factors are covered only by the OPAQ 2.0 and OPAQ SV. The ICF provides an excellent framework when comparing the content of osteoporosis-targeted HRQL instruments and may be useful when selecting health status instruments for clinical studies.

Are the contents of treatment outcomes in fibromyalgia trials represented in the International Classification Of Functioning, Disability, and Health?

ObjectivesTo identify the concepts contained in treatment outcomes of randomized controlled trials (RCTs) for interventions in patients with fibromyalgia (FM) using the International Classification of Functioning, Disability, and Health (ICF) as external reference. MethodsRCTs between 1992 and 2001 were located in MEDLINE and selected according to predefined eligibility criteria. The outcome measures were extracted and the concepts within the outcome measures were identified and linked to the ICF using a content-analytical approach. ResultsForty-two trials on FM were included. Twenty-seven different questionnaires were extracted. Of all, 79.2% (N=236) of the clinical and physiologic outcomes could be linked to 31 different ICF categories and 84.7% (N=964) of the concepts contained in the health-status questionnaire to 113 ICF categories. ConclusionsThe ICF provides a useful external reference to identify the concepts contained in outcome measures used in RCTs in FM.

Validation of the extended ICF core set for stroke from the patient perspective using focus groups

Purpose: The extended international classification of functioning, disability and health (ICF) core set for stroke is an application of the ICF of the World Health Organisation (WHO) with the purpose to represent the typical spectrum of functioning of persons with stroke. The objective of the study was to add evidence to the validation of the extended ICF core set for stroke from the perspective of patients using focus groups to explore the aspects of functioning and health important to persons with stroke. Method: The sampling of patients followed the maximum variation strategy. Sample size was determined by saturation. The focus groups were digitally recorded and transcribed verbatim. After qualitative data analysis, the resulting concepts were linked to ICF categories and compared to the categories included in the extended ICF core set for stroke. Results: Sixty patients participated in 15 focus groups. The content of 131 out of 166 ICF categories contained in the extended ICF core set for stroke was reported by the persons with stroke. The content of 31 additional categories that are not covered in the extended ICF core set for stroke was raised. Conclusions: The existing version of the extended ICF core set for stroke could be confirmed almost entirely from patient perspective. Implications for Rehabilitation: The extended ICF Core Set for stroke can be used to create a functioning profile for persons after stroke to identify problems and resources considering a client-centred approach. This study shows which aspects of the environment of persons after stroke are relevant from the clients’ perspective and should be integrated in the rehabilitation process. This study provides a basis for the further development of the ICF, especially with regard to its update in relevant aspects from clients’ perspective after stroke.