Table 4

Comparison of clinical characteristics between Chinese and non-Chinese patients with COVID-19

Variable	Patients from China (n=11 124)	Patients from non-Chinese countries (n=38 568)	X²	P value
Sex	10 932	19 624
Male	5649	10 422	5.790	0.016
Female	5283	9202	5.790	0.016
Age
50 years as the cut-off	288	NA
<50 years	144	NA	NA	NA
≥50 years	144	NA	NA	NA
60 years as the cut-off	2136	19 204
<60 years	1143	7241	201.320	<0.001
≥60 years	993	11 963	201.320	<0.001
65 years as the cut-off	1499	7552
<65 years	1015	2823	471.130	<0.001
≥65 years	484	4729	471.130	<0.001
Death	1056/8527	5108/38 441	5.000	0.025
Acute kidney injury
Incidence	1052/11 124	4188/38 568	17.980	<0.001
Non-severe	80/1540	14/192	1.460	0.227
Severe	150/737	27/65	15.590	<0.001
Death	206/577	1197/5780	68.560	<0.001
CRRT	190/4286	750/35 275	87.680	<0.001