TABLE 1.

Demographics of COVID and control patients

	COVID patients	No cognitive impairment	MCI	Alzheimer's disease
N	251	54	54	53
Age, (median, IQR)	71 (60–83)	71 (65–76)	77 (70–86)	82 (72–88)
Male sex, (N, %)	158 (63%)	19 (35%)	11 (20%)	21 (40%)
Median age of males, (IQR)	66 (58–81)	72 (63–78)	69 (60–74)	84 (73–89)
Median age of females, (IQR)	77 (66–87)	70 (66–76)	79 (74–86)	82 (70–88)
Sample type	Serum	Plasma	Plasma	Plasma

Abbreviations: IQR, interquartile range; MCI, mild cognitive impairment.