Questionários autoadministrados versus administrados por entrevistador para pacientes com claudicação intermitente
Os resultados são diferentes? Um estudo transversal
Palavras-chave:
Claudicação intermitente, Qualida de vida, Questionários, Estudos de validação, Doença arterial periféricaResumo
CONTEXTO E OBJETIVO: Muitas investigações clínicas usam questionários genéricos e/ou específicos para obter informações sobre os participantes e pacientes. Não se sabe se o modo de administração pode afetar os resultados. O objetivo foi determinar se, nos pacientes com claudicação intermitente (CI), existem diferenças nas pontuações do Walking Impairment Questionnaire (WIQ) e do European Quality of Life-5 Dimension (EQ-5D) no que diz respeito a: 1) a forma de administrar o questionário (autoadministrado versus entrevista presencial); e 2) o tipo de entrevistador: cirurgião vascular (CV) ou médico generalista (MG). TIPO DE ESTUDIO E LOCAL: Estudo epidemiológico observacional, transversal, multicêntrico realizado no Serviço Nacional de Saúde espanhol. METODO: 1.641 pacientes avaliáveis com CI completaram inicialmente o WIQ e questionários EQ-5, e depois, no mesmo dia, foram entrevistados pelo seu médico. Foram utilizados correlações de Pearson e testes de qui-quadrado. RESULTADOS: Houve forte correlação (r > 0,800; P < 0,001) entre os dois métodos de administração do WIQ e EQ-5D; e entre os grupos CV e MG. Também houve alto nível de concordância (P > 0,05) entre as diferentes dimensões do WIQ-distância e EQ-5D (autoadministrado versus entrevista presencial), nos grupos CV e MG. CONCLUSÃO: Em pacientes com CI, não há diferenças entre as diferentes formas de administrar os questionários WIQ e EQ-5D. Da mesma forma, os dois tipos de entrevistador (CV ou MG) foram igualmente válidos. Portanto, não parece necessário despender esforço para administrar esses questionários através de entrevista, em estudos de CI.
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