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. 2021 Jan 6;9(1):118–132. doi: 10.12998/wjcc.v9.i1.118

Table 1.

Characteristics of the study populations with coronavirus disease 2019 from China and North America

Characteristic China
North America
P 3 value
Number of cases (n)1
Mean2 (95%CI)
Number of cases (n)1
Mean2 (95%CI)
Age 23088 50.6 (50.4-50.8) 37293 55.5 (55.4-55.6) < 0.001
Male (%) 29755 52.6 (52.5-52.7) 36298 54.4 (54.2-54.5) < 0.001
Severity (%) 26810 18.7 (12.8-24.6) 7824 25.1 (19.1-31.3) < 0.001
Infection outcome (%)
ARDS 13524 14.5 (14.1-14.9) 1849 34.9 (33.9-36.1) < 0.001
Heart failure 4847 10.6 (10.2-11.1) 2654 2.5 (2.4-2.6) < 0.001
Septic shock 10886 4.0 (3.8-4.2) 2266 28.4 (27.3-29.5) < 0.001
Acute kidney injury 12767 5.5 (5.4-5.7) 4761 26.7 (26.4-27.1) < 0.001
Secondary infection 4617 15.3 (14.7-15.9) 807 5.3 (5.1-5.6) < 0.001
1

n is the number of subjects assessed for each characteristic as per the source database[7].

2

Weighted mean.

3

Student’s t-test or Chi Square test. ARDS: Acute respiratory distress syndrome.