Study
Exposure to ACEI/ARB
Exposure to ACEI/ARB
Exposure to ACEI/ARB
No Exposure to ACEI/ARB
No Exposure to ACEI/ARB
No Exposure to ACEI/ARB
ARR (%)
NNTB
RR (95% CI)
Total
Mortality Cases Non-mortality Cases
Total
Mortality Cases Non-mortality Cases
Zhang et al., China [11]
188
7
181
940
92
848
6.10
16
0.38 (0.18-0.81)
Yang et al., China [13]
43
2
41
83
11
72
8.60
12
0.35 (0.08-1.51)
Meng et al., China [14]
17
0
17
25
1
24
4.00
25
0.48 (0.02-11.17)
Huang et al., China [18]
20
0
20
30
3
27
10.00
11
0.21 (0.01-3.87)
Zeng et al., China [19]1
28
2
26
47
5
42
3.50
29
0.67 (0.14-3.23)
Li et al., China [20]
115
21
94
247
56
191
4.40
23
0.81 (0.51-1.26)
Ip et al., USA [23]1
460
137
323
669
262
407
9.40
11
0.76 (0.64-0.90)
Total/Pooled statistics
871
169
702
2041
430
1611
6.70
15
0.73 (0.63-0.86)