Table 2.

Characteristics of studies included for systematic review on the level of CRP and severity of COVID-19 disease, 2020.

S. No	Author	Country	Study design	Sample size
1	Li et al. 27	China	Retrospective	25
2	Han et al. 20	China	Retrospective	185
3	Wang et al. 25	China	Case series	209
4	Wang 10	China	Retrospective	27
5	Kermali et al. 6	United Kingdom	Retrospective	4514
6	Pan et al. 22	China	Retrospective	124
7	Velavana et al. 17	Vietnam	Retrospective	2652
8	Zhou et al. 3	China	Retrospective	123
9	Luo et al. 13	China	Retrospective	298
10	Chen et al. 15	China	Retrospective	249
11	Chen et al. 8	China	Retrospective	76
12	Sadeghi-Haddad-Zavareh et al. 16	Iran	Retrospective	429
13	Potempa et al. 14	United States	Retrospective	140
14	Pepys 18	United Kingdom	Expert review	Not available
15	Ali et al. 19	China	Retrospective	63
16	Acar et al. 21	Turkey	Retrospective	148
17	Stringer et al. 23	United Kingdom	Retrospective	1835
18	Statsenko et al. 24	United Arab Emirates	Retrospective	560
19	Cui et al. 26	United States	Retrospective	2707
20	Kazemi et al. 28	Iran	Retrospective	1070

CRP: C-reactive protein.