Olfactory testing
Healthy controls were categorized as normosmic, obtaining the maximum scores at olfactory testing, in contrast with the patient group that obtained scores between 1 and 7, which characterize them as anosmic and hyposmic(18).
The patient group was evaluated initially with the “Sniffing Stick Screening test” observing no significant differences between the treatment and no-treatment groups before training. All patients in the treatment group improved to a normosmic level, in comparison with the control group, where the 3 patients maintain their anosmic status. Comparison of olfactory test after training showed a significant improvement in the treatment group (P < 0.05), as shown in detail in Table 2. After conversion table application to the screening scores, a six-point difference was observed between the scores of two patients in the treatment group before and after olfactory training (Table 3).