Table 2. Diagnosis of DED and age distribution of asthma and non-asthma groups.

	Total (n = 206,145)		Asthma (n = 41,229)		Non-Asthma (n = 164,916)
	n	%	n	%	n	%	p-value
DED	10,726	5.2	2,619	6.35	8,107	4.92	<0.0001
Non-DED	195,419	94.8	38,610	93.65	156,809	95.08
Age distribution of DED
18 ≤ age < 40	489	4.56	157	5.99	332	4.1	<0.0001
40 ≤ age < 65	3,877	36.15	1,052	40.17	2,825	34.85
Age ≥ 65	6,360	59.3	1,410	53.84	4,950	61.06
Age of DED (years old)
Mean	65.82		64.12		66.37		<0.0001
95%CI	65.58–66.06		63.61–64.62		66.09–66.64
IQR	58.2–75.2		56.1–73.9		59.1–75.5