Table 3.

Comparison of coronavirus disease 2019 infection prevalence in different stages of chronic kidney disease

Stages of CKD	No infection to COVID-19 (n=390), n (%)	Infection to COVID-19 (n=13), n (%)	P
CKD stage 1 A1	73 (18.7)	4 (30.9)	0.894
CKD stage 1 A2	69 (17.7)	1 (7.6)
CKD stage 1 A3	7 (1.8)	0
CKD stage 2 A1	72 (18.5)	4 (30.9)
CKD stage 2 A2	85 (21.8)	0
CKD stage 2 A3	4 (1)	1 (7.6)
CKD stage 3a A1	47 (12.1)	2 (15.4)
CKD stage 3a A2	12 (3.1)	1 (7.6)
CKD stage 3a A3	1 (0.2)	0
CKD stage 3b A1	6 (1.5)	0
CKD stage 3b A2	7 (1.8)	0
CKD stage 4 A1	1 (0.3)	0
CKD stage 4 A3	6 (1.5)	0

P<0.05 was considered statistically significant. CKD: Chronic kidney disease, COVID-19: Coronavirus disease 2019