Table 1: Characteristics of studies included in the study.
Study ID |
Country |
Total sample |
Study design |
Mean Age (years) |
Male |
Female |
Hospitalized |
Death |
Medical Staffs |
Smoking history |
Chen, et al. 2020 [12] |
China |
99 |
Retrospective cohort |
55.5 |
67 |
32 |
0 |
11 |
0 |
0 |
Guan, et al. 2020 [13] |
China |
1099 |
Retrospective cohort |
47 |
640 |
459 |
1099 |
15 |
38 |
158 |
Huang, et al. 2020 [14] |
China |
41 |
Retrospective cohort |
49 |
30 |
11 |
0 |
6 |
0 |
3 |
Hu, et al. 2020 [15] |
China |
24 |
Retrospective cohort |
38.8 |
8 |
16 |
0 |
0 |
0 |
2 |
Li, et al. 2020 [16] |
China |
83 |
Retrospective observational |
45.5 |
44 |
39 |
0 |
0 |
0 |
0 |
Pung, et al. 2020 [17] |
China |
17 |
Retrospective cohort |
40 |
7 |
10 |
0 |
0 |
0 |
0 |
Shi, et al. 2020 [18] |
China |
81 |
Retrospective cohort |
49.5 |
42 |
39 |
0 |
2 |
0 |
0 |
Wu, et al. 2020 [19] |
China |
201 |
Cohort study |
51 |
128 |
73 |
0 |
44 |
0 |
0 |
Yang, et al. 2020 [20] |
China |
52 |
Retrospective observational |
59.7 |
35 |
17 |
0 |
32 |
0 |
2 |
Zhang, et al. 2020 [21] |
China |
140 |
Retrospective cohort |
57 |
71 |
69 |
0 |
1 |
3 |
9 |
Zhou, et al. 2020 [22] |
China |
191 |
Retrospective cohort |
56 |
119 |
72 |
0 |
54 |
0 |
0 |
Total |
|
2028 |
|
49.9 |
1191 |
837 |
1099 |
165 |
41 |
174 |