Severity of the patients was measured at the beginning of the study in accordance with the Montreal classification. 17.2% were asymptomatic S0, 27.8% showed slight activity S1, 32% were moderate S2, and 23.1% were severe S3 Figure 6.
Según la clasificación de Montreal, la severidad de los pacientes al ingreso al estudio fue: asintomáticos S0 17,2%, actividad leve S1 27,8%, moderada S2 32% y severa S3 23,1% figura 6.