Table 6.

Global Comparison Between VAS Scores at Separate Times.

Olfaction VAS	n	Mean ± Std. deviation	Median (min-max) IQR	P*
Before COVID-19	80	9.7 ± 0.7	10 (7-10) IQR = 0	<.001
COVID-19	80	0.9 ± 1.7	0 (0-7) IQR = 1.5
First appointment	80	3.6 ± 2.2	4 (0-8) IQR = 3
Return	80	5.8 ± 2.1	6 (0-10) IQR = 3

Abbreviations: VAS, visual analog scale; IQR, interquartile range (quartile 3 – quartile 1); AOT, advanced olfactory training; COT, classical olfactory training.

*Friedman's non-parametric test, P < .05.

*At this evaluation, the analysis was for OAT and COT combined.