Of all patients, 52% had COPD criteria Tiffeneau index <70, and of them, 3 were type I in the GOLD scale, 13 were type II, 33 were type III and 13 were type IV.
El 52% de los pacientes presentaban criterios de EPOC índice de Tiffeneau < 70, de los cuales 3 correspondieron al tipo i de la escala GOLD, 13 al tipo n, 33 al tipo m y 13 al tipo iv.