Similarly, in a Portuguese study on nutrition tertiary students, the participants' orthorexic scores (according to the ORTO-15 diagnostic questionnaire) actually decreased as they progressed through their course, as well as the overall risk of developing an eating disorder being an insignificant 4.2 percent. The participants also answered questionnaires to provide insight into their eating behaviours and attitudes, and despite this study finding that nutrition and health-science students tend to have more restrictive eating behaviours, these studies however found no evidence to support that these students have "more disturbed or disordered eating patterns than other students" These two aforementioned studies conclude that the more understanding of food one has is not necessarily a risk factor for ON, explaining that the data gathered suggests dietetics professionals are not at significant risk of it.