Table 1.

Measurement results for OB volume, OS depth, insular gyrus area, and corpus amygdala area.

		Patient group (COVID-19 group) (n = 23)			Healthy controls (n = 23)			P*
		Mean	Median	SD	Mean	Median	SD
Age (years)		37.08	38.00	14.41	36.82	38.00	13.10	0.974
Measurement results
OB volume (mm3)	R	33.72	33.15	4.18	35.58	36.94	4.74	0.040
	L	33.29	32.43	4.84	35.94	36.61	4.21	0.030
	P †	0.574			0.563
OS depth (mm)	R	7.48	7.41	0.72	7.33	7.10	0.89	0.448
	L	7.15	7.22	0.69	7.17	7.09	0.72	0.852
	P †	0.003			0.346
Insular gyrus area (mm2)	R	349.13	349.00	48.16	341.91	336.00	46.71	0.583
	L	347.04	347.00	47.31	340.73	342.00	55.07	0.575
	P †	0.456			0.749
Corpus amygdala area (mm2)	R	235.39	233.00	33.41	232.17	227.00	37.56	0.758
	L	236.82	241.00	33.44	231.34	224.00	38.96	0.455
	P †	0.484			0.659

*P value shows the results of Mann–Whitney U test.

^†P value shows the results of Wilcoxon Signed Rank test.

OB, olfactory bulb; OS, olfactory sulcus.