marginally significantp = 0.06
Effects of the intervention on olfactory performance Linear mixed model (LMM) comparing the change in olfactory threshold as a result of the intervention between the two groups, controlling for age, revealed a marginally significant main effect of the intervention, F (1,318) = 3.4, p = 0.06, and a significant and robust main effect of group, F (1,318) = 199.8, p < 0.001, but no interaction of these two factors, F (1,318) = 0.02, p = 0.88, suggesting a small increase in olfactory sensitivity in both groups as a result of the intervention.