“…Demographic factors such as sex, level of educational, knowledge of the disease, socioeconomic status and occupation, and clinical factors such as the age of diagnosis and the frequency of clinical visits, have all been evaluated as possible predictors of adherence in CF cases, and have met with conflicting results (Abbott et al, 1994(Abbott et al, , 1996(Abbott et al, , 2001Dziuban et al, 2010;Gudas et al, 1991;Oerman et al, 2000).…”