Empirical analysis of the International Classification of Functioning, Disability and Health (ICF) using structural equation modeling

ABSTRACT Objective: To empirically test the relationships proposed by the International Classification of Functioning, Disability and Health (ICF) among its domains. Method: The cross-sectional study was completed with 226 adult patients with different health conditions who attended a Brazilian rehabilitation unit. The ICF components were measured with the following instruments: World Health Organization Disability Assessment Instrument II, Functional Independence Measure, Participation Scale, Craig Hospital Inventory of Environmental Factors, and a protocol designed to gather information on body structure and function and personal factors. Results: Structural equation modeling showed good model adjustment, GFI=0.863; AGFI=0.795; RMSEA=0.028 (90% CI=0.014-0.043). Significant relationships were found between activity and both body structure and function (standard coefficient=0.32; p<0.0001) and participation components (standard coefficient=–0.70; p<0.0001). Environmental and personal factors had a significant effect on the three functioning components (standard coefficient =0.39; p<0.0001; standard coefficient =-0.35; p<0.001, respectively). In contrast, body structure and function had no significant effect on participation (standard coefficient=–0.10; p=0.111) and health conditions had no significant effect on any of the functioning components, i.e., body structure and function, activity, and participation (standard coefficient=–0.12; p=0.128). Conclusion: Some of the ICF’s proposed relationships across domains were confirmed, while others were not found to be significant. Our results reinforce the contextual dependency of the functioning and disability processes, in addition to putting into perspective the impact of health conditions.

Influence of context in social participation of people with disabilities in Brazil / Influencia del contexto en la participación social de las personas con discapacidades en el Brasil

OBJECTIVE: To identify environmental and personal factors associated with social participation in adults with various diseases/health conditions residing in the urban areas of the Belo Horizonte Metropolitan Region, Minas Gerais, Brazil. METHODS: Individual characteristics, social participation, and perception of environmental barriers of 226 patients treated at a public rehabilitation referral service were evaluated. Regression analyses with hierarchical entry of data were performed to verify the association of personal and environmental factors with social participation. RESULTS: More years of schooling, being engaged in the labor market, and consuming alcohol are conditions that increase the social participation of patients. Natural environment, transportation, access to health services, and social capital are perceived as the most important barriers to participation. Based on the linear regression analysis, the adjusted coefficient (R²adj) of the full model was 0.42 (P = 0.000). CONCLUSIONS: The results of this study may contribute to the planning and implementation of interventions and public policies at the individual and contextual level that are considered appropriate for reducing barriers and facilitate full participation.

OBJETIVO: Determinar los factores ambientales y personales asociados con la participación social de los adultos, en diversas situaciones de enfermedad o salud, que re­siden en las zonas urbanas de la Región Metropolitana de Belo Horizonte, del estado de Minas Gerais (Brasil). MÉTODOS: Se evaluaron las características individuales, la participación social y la percepción de las barreras ambientales de 226 pacientes tratados en un servicio público de rehabilitación de referencia. Se llevaron a cabo análisis de regresión con entrada jerárquica de los datos para comprobar la asociación de los factores personales y ambientales con la participación social. RESULTADOS: Un mayor número de años de escolarización, estar ocupado en el mercado de trabajo y el consumo de alcohol son condiciones que aumentan la participación social de los pacientes. El entorno natural, el transporte, el acceso a los servicios de salud y el capital social se perciben como las barreras más importantes a la participación. Con base en el análisis de regresión lineal, el coeficiente ajustado (R²aj) del modelo total fue de 0,42 (P = 0,000). CONCLUSIONES: Los resultados de este estudio pueden contribuir a la planificación y la ejecución de las intervenciones y políticas públicas a escalas individual y contextual que se consideren apropiadas para reducir las barreras y facilitar la plena participación.