From: Meta-analysis of incidence rate data in the presence of zero events
 | Pre-intervention | Post-intervention | ||
---|---|---|---|---|
Study no. | No. events | Time (years) | No. events | Time (years) |
1 | 19 | 6 | 0 | 4 |
2 | 41 | 5 | 20 | 5 |
3 | 221 | 14 | 0 | 0.4 |
4 | 25 | 7 | 1 | 5 |
5 | 14 | 22 | 0 | 22 |
6 | 7 | 3 | 0 | 3 |
7 | 96 | 9 | 0 | 4 |
8 | 13 | 10 | 0 | 2 |