Table 1.

Patients baseline characteristics

	Total (N = 123 408)				p-valuea	COVID-19 patients (N = 7713)				p-valuea
	Non COVID-19 patients (n = 115 695)		COVID-19 patients (n = 7713)			Survival (n = 7465)		Death (n = 248)
	n	%b	n	%b		n	%b	n	%b
Sex
Male	45 720	39.5	3048	39.5	1.000	2912	39.0	136	54.8	<0.001
Female	69 975	60.5	4665	60.5		4553	61.0	112	45.2
Age (years)
20–29	30 855	26.7	2057	26.7	1.000	2057	27.6	0	0.0	<0.001
30–39	12 480	10.8	832	10.8		831	11.1	1	0.4
40–49	15 540	13.4	1036	13.4		1032	13.8	4	1.6
50–59	23 505	20.3	1567	20.3		1552	20.8	15	6.0
60–69	17 985	15.5	1199	15.5		1161	15.6	38	15.3
70–79	9255	8.0	617	8.0		551	7.4	66	26.6
80+	6075	5.3	405	5.3		281	3.8	124	50.0
Region of residence
Seoul	7650	6.6	510	6.6	1.000	506	6.8	4	1.6	<0.001
Daegu	75 540	65.3	5036	65.3		4884	65.4	152	61.3
Gyeonggi-do	6465	5.6	431	5.6		414	5.5	17	6.9
Gyeongsangbuk-do	13 995	12.1	933	12.1		878	11.8	55	22.2
Others	12 045	10.4	803	10.4		783	10.5	20	8.1
Health insurance premium
Medical Aid	6239	5.4	767	9.9	<0.001	718	9.6	49	19.8	<0.001
1st quintile (lowest)	22 072	19.1	1565	20.3		1528	20.5	37	14.9
2nd quintile	17 510	15.1	1065	13.8		1045	14.0	20	8.1
3rd quintile	19 761	17.1	1256	16.3		1224	16.4	32	12.9
4th quintile	21 725	18.8	1261	16.3		1223	16.4	38	15.3
5th quintile (highest)	28 388	24.5	1799	23.3		1727	23.1	72	29.0
CCI score
0	100 936	87.2	6625	85.9	0.001	6465	86.6	160	64.5	<0.001
1	6905	6.0	482	6.2		450	6.0	32	12.9
2+	7854	6.8	606	7.9		550	7.4	56	22.6
Mental illness
No	109 219	94.4	6976	90.4	<0.001	6822	91.4	154	62.1	<0.001
Yes	6476	5.6	737	9.6		643	8.6	94	37.9

COVID-19, Coronavirus Disease 2019; CCI, Charlson Comorbidity Index, Mental illness (F00–F99).

^ap-value for χ² test.

^b% is column percentages