Table 1.

Demographics of AAU group and control group.

Variable	AAU Patients (n = 5621)		Control Group (n = 22,484)		p-Value
	n	%	n	%
Age, median (IQR a)	47 (33–63)		47.3 (32–63)		0.99
Gender					0.99
Male	3155	56.13	12,620	56.13	1.0
Female	2466	43.87	9864	43.87	1.0
AS	188	3.34	288	1.28	<0.0001 ***
Observation time without developing AS (days, median, IQR a)	1507 (591–2423)		1578 (708–2448)		<0.001 ***

^a IQR: Interquartile range, *** indicated p < 0.001.