Validación del cuestionario de actividad física de Yale en pacientes con enfermedad pulmonar obstructiva crónica

The Yale Physical Activity Survey may be a valid tool to classify, but not to quantify, physical activity performed by COPD patients. The summary index of this questionnaire, based on seven short questions, shows the best validity properties. This suggests that it should be considered a screening tool to identify patients at risk for sedentarism.