Clustering of functioning and disability profile based on the WHO disability assessment schedule 2.0 - a nationwide databank study.

OBJECTIVE: To compare and cluster the health status and disability restrictions associated with eight major physiological functions of body systems, using functioning domains of WHO Disability Assessment Schedule 2.0. DESIGN: Retrospective analyses of a nation-wide disability database. SETTING: Population-based study. PARTICIPANTS: Records from patients >18 years of age with disability were obtained from the Taiwan Data Bank of Persons with Disability (July 2012-November 2017). Disability functioning profile of the following diagnosis were analyzed: stroke, schizophrenia, hearing loss, liver cirrhosis, chronic kidney disease, congestive heart failure, burn, head and neck cancer. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Demographic data, severity of impairment, and Disability Assessment Scale scores were obtained and analyzed. Radar charts were constructed using the WHO Disability Assessment Schedule 2.0. functioning domain score. Degree of similarity between any two given diagnosis was assessed by cluster analysis, comparing the Euclidean distances between radar chart data points among the six domains. RESULTS: Based on cluster analysis of similarities between functioning domain profiles, the eight diagnoses were grouped into different disability clusters. Four clusters of disability were named according to the type restriction patterns: global-impact cluster (stroke); interaction-restriction cluster (schizophrenia, hearing loss); physical-limitation cluster, (liver cirrhosis, CKD, and congestive heart failure); and specific-impact cluster (burn, head and neck cancer). The rates of institutionalization and unemployment differed between the four clusters. CONCLUSION: We converted WHO Disability Assessment Schedule 2.0. functioning domain scores into six-dimensioned radar chart, and demonstrate disability restrictions can be further categorized into clusters according to similarity of functioning impairment. Understanding of disease-related disabilities provides an important basis for designing rehabilitation programs and policies on social welfare and health that reflect the daily-living needs of people according to diagnosis.Implication for RehabilitationThe use of radar charts provided a direct visualization of the scope and severity of disabilities associated with specific diagnoses.Diagnosis-related disabilities can be organized into clusters based on similarities in WHODAS 2.0 disability domain profiles.Knowledge of the characteristics of disability clusters is important to understand disease-related disabilities and provide a basis for designing rehabilitation.

Supporting evidence-informed policy making in rehabilitation: A logic framework for continuous improvement of rehabilitation programs.

Because of important health and population trends, rehabilitation is a key health strategy of the 21st century, and efforts are being made towards a broader integration of rehabilitation into health systems worldwide. In the scope of the call for action Rehabilitation 2030, WHO recommends a logic model approach for monitoring and evaluating national efforts at the systems level. In this paper we argue that as strengthening rehabilitation in health systems will require countries to implement a range of new programs, sound logic models designed to monitor and evaluate rehabilitation programs at service level are needed as well. We therefore propose in this paper an overarching logic model for monitoring and evaluating rehabilitation programs, including feasible indicators, options for their operationalization and considerations about data analyses. Our overarching logic model for monitoring and evaluation at service level is suitable to structure national clinical quality management for continuous improvement, to inform policy making and programming at the national level, and to serve as a reference framework for research. The model will serve as a starting point for developing other logic models that fit specific features of rehabilitation programs in diverse settings and countries.

The Nottwil Standard-Development and Implementation of an International Classification of Functioning, Disability and Health-Based Clinical Standard Assessment for Post-acute Rehabilitation After Newly Acquired Spinal Cord Injury.

Introduction: Assessments during rehabilitation of spinal cord injury (SCI) align with the World Health Organization's classifications and national quality requirements. This paper aims to report on the development and first implementation experiences of an institutional standard of assessments performed after newly acquired SCI. Setting: Specialized SCI acute care and post-acute rehabilitation clinic in Switzerland. Methods: A situation analysis of an interdisciplinary post-acute SCI rehabilitation program was performed. The results informed a subsequent consensus-based selection of assessments, and an information and implementation strategy. Linking to the ICF Core Set for SCI in post-acute settings and ICF Generic-30 Set was performed. The Nottwil Standard was piloted for 18 months. Results: Situation analysis: A battery of 41 assessments were irregularly performed during initial rehabilitation after newly aquired SCI. Selection of assessments: A multidisciplinary group of clinicians agreed on 10 examinations, 23 assessments and two questionnaires that make up the Nottwil Standard. In total, 55 ICF categories are covered, including most of the ICF Generic-30 Set categories. The implementation strategy included Executive Board commitment, a structured improvement project, guidelines for documentation and assessments, a manual controlling system, and staff training on the Nottwil Standard. Pilot phase: 54 persons with paraplegia and 42 with tetraplegia (75 male; 21 female) were included. Twenty-seven assessments out of 33 assessments were performed in more than 80% of all observed patients' rehabilitation. Conclusion: Implementation of a standard assessment schedule was feasible but required a well-structured process with good communication strategy and controlling mechanism, and full engagement of involved professions.

The influence and added value of a Standardized Assessment and Reporting System for functioning outcomes upon national rehabilitation quality reports.

OBJECTIVE: To demonstrate the influence and added value of a Standardized Assessment and Reporting System (StARS) upon the reporting of functioning outcomes for national rehabilitation quality reports. A StARS builds upon an ICF-based (International Classification of Functioning, Disability and Health) and interval-scaled common metric. DESIGN: Comparison of current ordinal-scaled Swiss national rehabilitation outcome reports including an expert-consensus-based transformation scale with StARS-based reports through descriptive statistical methods and content exploration of further development areas of the reports with relevant ICF Core Sets. SETTING: Swiss national public rehabilitation outcome quality reports on the clinic level. PARTICIPANTS: A total of 29 Swiss rehabilitation clinics provided their quality report datasets including 18 047 patients. INTERVENTIONS: Neurological or musculoskeletal rehabilitation. MAIN OUTCOME MEASURES: Functional Independence Measure™ or Extended Barthel Index. RESULTS: Outcomes reported with a StARS tended to be smaller but more precise than in the current ordinal-scaled reports, indicating an overestimation of achieved outcomes in the latter. The comparison of the common metric's content with ICF Core Sets suggests to include 'energy and drive functions' or 'maintaining a basic body position' to enhance the content of functioning as an indicator. CONCLUSIONS: A StARS supports the comparison of outcomes assessed with different measures on the same interval-scaled ICF-based common metric. Careful consideration is needed whether an ordinal-scaled or interval-scaled reporting system is applied as the magnitude and precision of reported outcomes is influenced. The StARS' ICF basis brings an added value by informing further development of functioning as a relevant indicator for national outcome quality reports in rehabilitation.

We need an operationalisation, not a definition of health.

Purpose: To demonstrate the value of the International Classification of Functioning, Disability and Health (ICF) notion of functioning as an operationalisation of health so as to describe, measure, and explain the lived experience of health, which is what matters to people about their health.Methods: Conceptual analysis based on evidence on the need to describe, measure, and compare states of health.Results: The ICF is the ideal framework to operationalise the lived experience of health. Its application in rehabilitation in particular, shows its value for the standardised reporting of outcomes of health interventions, clinical and services quality management, and evidence-informed health policy.Conclusions: The ICF provides both the frame of reference for an operationalisation of health that satisfies the intuitive understanding of what matters to people about their health and the technical tools for both health sciences and practice.Implications for rehabilitationAn operationalisation of health is essential to describe the relative health status of individuals and populations as well as to measure the impact of rehabilitation interventions.An operationalisation of health focuses on the lived experience of health.The International Classification of Health, Functioning and Disability (ICF) is the ideal framework to operationalise the lived experience of health.

Specifying clinical assessment schedules for the European framework of rehabilitation service types: the perspective of the physical and rehabilitation medicine Section and Board of the European Union of Medical Specialists.

INTRODUCTION: In light of global mandates and in recognition of the value of data collection and reporting based on the International Classification of Functioning, Disability and Health (ICF), the UEMS PRM Section and Board established an action plan to implement the ICF in Physical and Rehabilitation Medicine, rehabilitation and health care at large. This includes, among other steps, the development of a framework of rehabilitation service types for Europe (European Framework) and corresponding clinical assessment schedules (CLASs) for each service type. A CLAS encompasses the recommendation for what aspects of functioning to document, for whom and when, and the data collection tools to use. The objective of this paper is to report on the development of the CLASs for the European Framework developed in Stockholm in 2018, with focus on what to document. METHODS: Involving UEMS PRM delegates across European regions, a multistage Delphi process comprised the development of an initial proposal of the CLASs (i.e. default and optional ICF Sets to document), two feedback (pre- and post-Stockholm) rounds via e-mail, and a deliberation by the UEMS PRM during its March 2019 meeting in Budapest. In both Delphi rounds, participants were asked whether the initially proposed default and optional ICF Sets represent what is currently documented at an exemplary service provider in the country or in consideration of their own expertise. The European Framework was revised between the two Delphi rounds, requiring a revision of the CLAS proposal accordingly. Participants were additionally asked whether they support the suggested ICF Sets as the specification of the CLAS. Level of support (strong = ≥80%, moderate = between 80-60%, weak =≤59%) was calculated as the percentage of countries supporting the suggested CLAS over the number of responding countries. The results of the post-Stockholm round were presented for discussion, revision and approval at the Budapest meeting. RESULTS: Pre-Stockholm Delphi round: due to low response rate only a summary of comments made by the responding countries was provided as reference information for the post-Stockholm round. Post-Stockholm Delphi round: results indicated moderate to strong support for the proposed CLASs. Deliberation Budapest Meeting - Motions for specific revisions to the CLASs based on the results of the Post-Stockholm round were predominately accepted. With additional minor revisions, the UEMS PRM General Assembly approved a version of the CLASs for the European Framework. CONCLUSIONS: To kick-off the implementation of these CLASs, UEMS PRM plans demonstration projects in at least one rehabilitation facility in each delegate country that exemplifies the rehabilitation service types of the European Framework which exist in the respective country. The demonstration projects are intended to orient service providers and clinicians to the CLASs and illustrate how the CLASs can be implemented.

Health, Functioning, and Well-being: Individual and Societal.

As a society we invest an enormous amount of resources in health because we are convinced that health is linked in some way to a person's well-being, and that population health is linked to overall societal welfare. But the nature of this link, and the evidence for it, are more controversial. After exploring current attempts to operationalize well-being in a manner amenable to measurement, in this article we offer a way for securing the link between the provision of health care and individual well-being, and societal welfare by highlighting what matters to people about their health. We argue that it is the lived experience of health and its effect on daily life that matters. This experience is captured by the notion of functioning in the World Health Organization's International Classification of Functioning, Disability and Health. Moreover, viewed as an indicator of health on par with mortality and morbidity, functioning provides the essential bridge that links the provision of health care both to individual well-being and, at the population level, societal welfare.

ICF Generic Set as new standard for the system wide assessment of functioning in China: a multicentre prospective study on metric properties and responsiveness applying item response theory.

OBJECTIVES: To examine metric properties and responsiveness of the International Classification of Functioning, Disability and Health (ICF) Generic Set when used in routine clinical practice to assess functioning. DESIGN: Prospective multicentre study. SETTING: 50 hospitals from 20 provinces of Mainland China. PARTICIPANTS: 4510 adult inpatients admitted to the departments of Pulmonology, Cardiology, Neurology, Orthopaedics, Cerebral Surgery or Rehabilitation Medicine. MAIN OUTCOME MEASURES: The ICF Generic Set (ICF Generic 6 Set) applied with an 11-point numeric rating scale (0-no problem to 10-complete problem) was fit to the Partial Credit Model (PCM) to create an interval score of functioning. RESULTS: PCM assumptions were found to be fulfilled after accounting for Differential Item Functioning. With an average improvement by 7.86 points of the metric ICF Generic 6 score (95% CI 7.53 to 8.19), the ICF Generic 6 Set proved sensitive to change (Cohen's f2=0.41). Ceiling and floor effects on detecting change in functioning were cancelled or reduced by using the metric score. CONCLUSION: The ICF Generic 6 Set can be used for the assessment of functioning in routine clinical practice and an interval score can be derived which is sensitive to change.

Using concept mapping to develop a human rights based indicator framework to assess country efforts to strengthen rehabilitation provision and policy: the Rehabilitation System Diagnosis and Dialogue framework (RESYST).

BACKGROUND: Rehabilitation is crucial for the realization of the right to health and a proper concern of global health. Yet, reliable information to guide rehabilitation service planning is unavailable in many countries in part due to the lack of appropriate indicators. To ensure universal health coverage and meet the central imperative of "leaving no one behind" countries must be able to assess key aspects of rehabilitation policy and provision and monitor how they have discharged their human rights responsibilities towards those most disadvantaged, including people with disability. This article describes the process of developing an expert guided indicator framework to assess governments' efforts and progress in strengthening rehabilitation in line with the Convention on the Rights of Persons with Disabilities. METHODS: A systems methodology - concept mapping - was used to capture, aggregate and confirm the knowledge of diverse stakeholders on measures thought to be useful for monitoring the implementation of the Convention with respect to health related rehabilitation. Fifty-six individuals generated a list of 107 indicators through online brainstorming which were subsequently sorted by 37 experts from the original panel into non overlapping categories. Forty-one participants rated the indicators for importance and feasibility. Multivariate statistical techniques where used to explore patterns and themes in the data and create the indicators' organizing framework which was verified and interpreted by a select number of participants. RESULTS: A concept map of 11 clusters of indicators emerged from the analysis grouped into three broader themes: Governance and Leadership (3 clusters); Service Delivery, Financing and Oversight (6 clusters); and Human Resources (2 clusters). The indicator framework was comprehensive and well aligned with the Convention. On average, there was a moderately positive correlation between importance and feasibility of the indicators (r = .58) with experts prioritizing the indicators contained in the clusters of the Governance and Leadership domain. Two of the most important indicators arose from the Service Delivery, Financing and Oversight domain and reflect the need to monitor unmet needs and barriers in access to rehabilitation. In total, 59 indicators achieved above average score for importance and comprised the two-tiered priority set of indicators. CONCLUSION: Concept mapping was successful in generating a shared model that enables a system's view of the most critical legal, policy and programmatic factors that must be addressed when assessing country efforts to reform, upscale and improve rehabilitation services. The Rehabilitation Systems Diagnosis and Dialogue framework provides a data driven basis for the development of standardized data collection tools to facilitate comparative analysis of rehabilitation systems. Despite agreement on the importance and feasibility of 59 indicators, further research is needed to appraise the applicability and utility of the indicators and secure a realistic assessment of rehabilitation systems.

Implementation of Clinical Quality Management for Rehabilitation in Malaysia.

In February 2017, the World Health Organization (WHO) launched its historic "Rehabilitation 2030: A Call for Action". Scaling up rehabilitation in health systems requires concerted action across all 6 components of WHO's Health Systems Framework. For rehabilitation, information about functioning is essential, as it is required for effective rehabilitation at all levels of the health system. What is missing is a countrywide demonstration project involving the implementation of a clinical quality management system for the continuous improvement of rehabilitation, both at the level of clinical care for individual patients and at the level of rehabilitation service provision. Consequently, the Department of Rehabilitation Medicine at the University of Malaya and University Malaya Medical Centre, together with the Cheras Rehabilitation Hospital of the Ministry of Health, and the Social Security Organisation (SOCSO) Rehabilitation Centre in Malacca, Malaysia, initiated a project to develop a Malaysian-wide clinical quality management system for rehabilitation (CQM-R Malaysia). The objective of this paper is to describe CQM-R Malaysia. First, a conceptual description of a CQM-R based on the International Classification of Functioning, Disability and Health (ICF) is set out. The methods, results and conclusions of a situation analysis conducted in January 2017 are then reported. Finally, the building blocks and implementation action plan developed for CQM-R Malaysia are presented.

Optimizing health system response to patient's needs: an argument for the importance of functioning information.

BACKGROUND: Current health systems are increasingly challenged to meet the needs of a growing number of patients living with chronic and often multiple health conditions. The primary outcome of care, it is argued, is not merely curing disease but also optimizing functioning over a person's life span. According to the World Health Organization, functioning can serve as foundation for a comprehensive picture of health and augment the biomedical perspective with a broader and more comprehensive picture of health as it plays out in people's lives. The crucial importance of information about patient's functioning for a well-performing health system, however, has yet to be sufficiently appreciated. METHODS: This paper argues that functioning information is fundamental in all components of health systems and enhances the capacity of health systems to optimize patients' health and health-related needs. RESULTS AND CONCLUSION: Beyond making sense of biomedical disease patterns, health systems can profit from using functioning information to improve interprofessional collaboration and achieve cross-cutting disease treatment outcomes. Implications for rehabilitation Functioning is a key health outcome for rehabilitation within health systems. Information on restoring, maintaining, and optimizing human functioning can strengthen health system response to patients' health and rehabilitative needs. Functioning information guides health systems to achieve cross-cutting health outcomes that respond to the needs of the growing number of individuals living with chronic and multiple health conditions. Accounting for individuals functioning helps to overcome fragmentation of care and to improve interprofessional collaboration across settings.

Functioning: the third health indicator in the health system and the key indicator for rehabilitation.

In this methodological note on applying the ICF in rehabilitation, we introduce functioning as the third health indicator complementing the established indicators mortality and morbidity. Together, these three provide a complete set of indicators for monitoring the performance of health strategies in health systems. When applying functioning as the third health indicator across the five health strategies, it is fundamental to distinguish between biological health and lived health. For rehabilitation, functioning is the key indicator. Since we can now code mortality and morbidity data with the ICD, and functioning data with the ICF, and since given current plans to including functioning properties in the proposed ICD-11 revision, we should in the future be able to report on all three health indicators.

European initiative for the application of the International Classification of Functioning, Disability and Health: development of Clinical Assessment Schedules for specified rehabilitation services.

BACKGROUND: Clinical assessment schedule (CLAS) is a core part of the ICF-based implementation of functioning reporting across health conditions and along the continuum of care. AIM: The Physical and Rehabilitation Medicine Section and Board of the European Union of Medical Specialists (UEMS PRM) workshop held in January 2016 aimed to develop and specify a CLAS within the context of rehabilitation services. SETTING: UEMS PRM Workshop in Nottwil, Switzerland, January 2016. POPULATION: PRM physicians representatives from 12 European countries, as well as Israel and Japan, mostly delegates of UEMS PRM Section and Board, and experts with other rehabilitation professional backgrounds. METHODS: Participants were divided into 6 working groups and asked to specify what functioning aspects would be essential to document using the available ICF sets for the identified rehabilitation services contained in the newly developed service classification (ICSO-R): acute, post-acute and long-term rehabilitation services. RESULTS: The 7 ICF Generic and 23 Rehabilitation Set categories were confirmed as well as specific health condition categories for acute rehabilitation services (mobile team), for postacute rehabilitation services (general outpatient rehabilitation, musculoskeletal and neurological rehabilitation, as well as specialized SCI rehabilitation), and for long-term rehabilitation services (day clinic and rehabilitation provided in the community). While general principles of the CLAS were defined, the need to align the CLAS for a specific service, as well as across services along the continuum of care was highlighted. All groups deliberated on this topic; however, no conclusive statement was presented yet. CONCLUSIONS: The groups recognized a need for a systematic effort to identify data collection tools currently used. CLINICAL REHABILITATION IMPACT: CLASs will serve in the future to ensure that functioning information is systematically and consistently collected across services, and thus respond also to various global reports and initiatives which stress the need for improving data collection on people's functioning.

Capturing patients' needs in casemix: a systematic literature review on the value of adding functioning information in reimbursement systems.

BACKGROUND: Contemporary casemix systems for health services need to ensure that payment rates adequately account for actual resource consumption based on patients' needs for services. It has been argued that functioning information, as one important determinant of health service provision and resource use, should be taken into account when developing casemix systems. However, there has to date been little systematic collation of the evidence on the extent to which the addition of functioning information into existing casemix systems adds value to those systems with regard to the predictive power and resource variation explained by the groupings of these systems. Thus, the objective of this research was to examine the value of adding functioning information into casemix systems with respect to the prediction of resource use as measured by costs and length of stay. METHODS: A systematic literature review was performed. Peer-reviewed studies, published before May 2014 were retrieved from CINAHL, EconLit, Embase, JSTOR, PubMed and Sociological Abstracts using keywords related to functioning ('Functioning', 'Functional status', 'Function*, 'ICF', 'International Classification of Functioning, Disability and Health', 'Activities of Daily Living' or 'ADL') and casemix systems ('Casemix', 'case mix', 'Diagnosis Related Groups', 'Function Related Groups', 'Resource Utilization Groups' or 'AN-SNAP'). In addition, a hand search of reference lists of included articles was conducted. Information about study aims, design, country, setting, methods, outcome variables, study results, and information regarding the authors' discussion of results, study limitations and implications was extracted. RESULTS: Ten included studies provided evidence demonstrating that adding functioning information into casemix systems improves predictive ability and fosters homogeneity in casemix groups with regard to costs and length of stay. Collection and integration of functioning information varied across studies. Results suggest that, in particular, DRG casemix systems can be improved in predicting resource use and capturing outcomes for frail elderly or severely functioning-impaired patients. CONCLUSION: Further exploration of the value of adding functioning information into casemix systems is one promising approach to improve casemix systems ability to adequately capture the differences in patient's needs for services and to better predict resource use.

Health-related rehabilitation and human rights: analyzing states' obligations under the United Nations Convention on the Rights of Persons with Disabilities.

Globally, disability represents a major challenge for health systems and contributes to the rising demand for rehabilitation care. An extensive body of evidence testifies to the barriers that people with disabilities confront in accessing rehabilitation services and to the enormous impact this has on their lives. The international legal dimension of rehabilitation is underexplored, although access to rehabilitation is a human right enshrined in numerous legal documents, specifically the Convention on the Rights of Persons with Disabilities. However, to date, no study has analyzed the implications of the Convention for Rehabilitation Policy and Organization. This article clarifies states' obligations with respect to health-related rehabilitation for persons with disabilities under the Convention. These obligations relate to the provision of rehabilitation but extend across several key human right commitment areas such as equality and nondiscrimination; progressive realization; international cooperation; participation in policymaking processes; the accessibility, availability, acceptability, and quality of rehabilitation services; privacy and confidentiality; and informed decision making and accountability. To support effective implementation of the Convention, governments need to focus their efforts on all these areas and devise appropriate measures to monitor compliance with human rights principles and standards in rehabilitation policy, service delivery, and organization. This article lays the foundations for a rights-based approach to rehabilitation and offers a framework that may assist in the evaluation of national rehabilitation strategies and the identification of gaps in the implementation of the Convention.

Biological health or lived health: which predicts self-reported general health better?

BACKGROUND: Lived health is a person's level of functioning in his or her current environment and depends both on the person's environment and biological health. Our study addresses the question whether biological health or lived health is more predictive of self-reported general health (SRGH). METHODS: This is a psychometric study using cross-sectional data from the Spanish Survey on Disability, Independence and Dependency Situation. Data was collected from 17,739 people in the community and 9,707 from an institutionalized population. The following analysis steps were performed: (1) a biological health and a lived health score were calculated for each person by constructing a biological health scale and a lived health scale using Samejima's Graded Response Model; and (2) variable importance measures were calculated for each study population using Random Forest, with SRGH as the dependent variable and the biological health and the lived health scores as independent variables. RESULTS: The levels of biological health were higher for the community-dwelling population than for the institutionalized population. When technical assistance, personal assistance or both were received, the difference in lived health between the community-dwelling population and institutionalized population was smaller. According to Random Forest's variable importance measures, for both study populations, lived health is a more important predictor of SRGH than biological health. CONCLUSIONS: In general, people base their evaluation of their own health on their lived health experience rather than their experience of biological health. This study also sheds light on the challenges of assessing biological health and lived health at the general population level.

Dissemination, analysis, and implementation of the World Report on Disability: the roadmap of the International Society for Physical and Rehabilitation Medicine.

The International Society for Physical and Rehabilitation Medicine has recognized the World Report on Disability as a guide for its future activities and endorsed its responsibility to disseminate, to analyze, and to implement the report's recommendations. The activities of the International Society for Physical and Rehabilitation Medicine on the global stage are embedded in a strategy that includes national and regional associations. This article reports on recent and forthcoming activities of the International Society for Physical and Rehabilitation Medicine regarding the World Report on Disability and identifies five major challenges that will impact future International Society for Physical and Rehabilitation Medicine activities. These challenges relate to (1) education and training, (2) the support of strong role models, (3) disaster management, (4) the development of innovative rehabilitation services, and (5) rehabilitation research.

Disability evaluation, social security, and the international classification of functioning, disability and health: the time is now.

OBJECTIVE: To present the International Classification of Functioning, Disability and Health (ICF) as a standard in disability evaluation and to discuss the usefulness and challenges of the ICF when applied in disability evaluation. CONCLUSIONS: Disability evaluation can be described and measured using the ICF and ICF-related tools such as the Generic Set, ICF Core Sets specific to health conditions or settings, and measurement instruments that have been linked to the ICF. Wide implementation of the ICF in disability evaluation, specifically in work disability and social security, is needed along with education on the ICF of those in occupational medicine, work rehabilitation, disability adjudication, policy and legislation, and government agencies. The ICF can be used to provide disability criteria in determining functional and work capacity and as a reference framework and a language of disability to help facilitate a common ground of understanding.

Content validity of the comprehensive international classification of functioning, disability and health (ICF) core set for low back pain from the perspective of physicians: a Delphi survey.

OBJECTIVES: The 'Comprehensive ICF Core Set for low back pain (LBP)' is an application of the International Classification of Functioning, Disability and Health (ICF) and represents the typical spectrum of problems in functioning of patients with LBP. The objective of this study was to validate this ICF Core Set from the perspective of physicians. METHODS: Physicians experienced in the treatment of LBP were asked about the patients' problems, patients' resources and aspects of environment that physicians take care of in a three-round survey using the Delphi technique. Responses were linked to the ICF. RESULTS: Seventy-one physicians in 36 countries named 707 concepts that covered all ICF components. One hundred ninety-three ICF categories were linked to these answers. Three ICF categories were not represented in the Comprehensive ICF Core Set for LBP although at least 75% of the participants have rated them as important. Twenty-six concepts were linked to the not yet developed ICF component personal factors and 21 issues were not covered by the ICF. DISCUSSION: The high percentage of ICF categories represented in the ICF Core Set for LBP indicates good content validity from the perspective of the physicians. However, some issues were raised that were not covered and need to be investigated further.