Jornal Brasileiro de Pneumologia (Apr 2009)
Estudo comparativo entre dois questionários de qualidade de vida em pacientes com DPOC Comparative study of two quality of life questionnaires in patients with COPD
Abstract
OBJETIVO: Comparar dois questionários de avaliação de qualidade de vida-Saint George's Respiratory Questionnaire (SGRQ) e Medical Outcomes Study 36-item Short-Form Health Survey (SF-36)-em pacientes com DPOC quanto às suas propriedades discriminativas e correlacionar seus respectivos domínios com as seguintes variáveis: escore da escala modificada do Medical Research Council; escore do Inventário de Depressão de Beck; escore da escala visual analógica para percepção do estado geral da saúde; escore de Mini-Mental State Examination; e um escore clínico de DPOC criado especialmente para o estudo. MÉTODOS: Foram entrevistados 30 pacientes com DPOC entre os meses de maio e setembro de 2006. Foram comparados e correlacionados os escores totais e os respectivos domínios dos questionários SF-36 e SGRQ. RESULTADOS: Todos os domínios do SF-36 apresentaram correlação estatisticamente significativa com o escore total do SGRQ (r = -0,5 a -0,69; p OBJECTIVE: To compare two quality of life questionnaires-the Saint George's Respiratory Questionnaire (SGRQ) and the Medical Outcomes Study 36-item Short-Form Health Survey (SF-36)-in patients with COPD, focusing on the discriminative properties of the questionnaires and correlating their domains with the following variables: Modified Medical Research Council Dyspnea Scale score; Beck Depression Inventory score; visual analog scale general health perception; Mini-Mental State Examination score; and a COPD clinical score developed specifically for the study. METHODS: We interviewed 30 COPD patients between May and September of 2006. For the SF-36 and SGRQ, scores (total and domain) were compared and correlated. RESULTS: With the exception of the pain domain, all of the SF-36 domains correlated significantly with the SGRQ total score (r = -0.5 to -0.69; p < 0.01). Of the SGQR domains, only the symptoms domain correlated significantly with all of the variables studied (p < 0.05). CONCLUSIONS: The majority of the expected correlations between the SGRQ and the SF-36 were observed, as were those expected between the two questionnaires and the other variables studied. The SGRQ, notably the symptoms domain, presented better discriminative properties than did the generic SF-36 questionnaire. The SF-36 is not an appropriate instrument for determining the affective state of COPD patients.
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