| Post-RVV period (Apr- Sep 2017) | Pre-RVV period (Oct 2016 - Mar 2017) | Pre-RVV period (Apr- Sep 2016) | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Region (number of sites)a | No of cases | IS case rate | No of cases | IS case ratio | RR (95% CI) for cases | RR (95% CI) for IS case rate | No of cases | IS ratio | RR (95% CI) for cases | RR (95% CI) for IS case rate |
East (n = 2)a | 20 | 20.4 | 29 | 29.9 | 0.69 (0.33–1.2) | 0.67 (0.3–1.28) | 45 | 34.6 | 0.44 (0.2–1.15) | 0.58 (0.32–1.2) |
North (n = 1)a | 0 | 0 | 2 | 27.4 | – | – | 3 | 37.5 | – | – |
South (n = 1)a | 6 | 13.3 | 8 | 20.4 | 0.75 (0.45–1.24) | 0.65 (0.48–1.23) | 11 | 26.4 | 0.55 (0.28–1.2) | 0.51 (0.3–1.22) |
Pooled (n = 4)a | 26 | 16.3 | 39 | 27.2 | 0.67 (0.34–1.19) | 0.6 (0.3–1.18) | 59 | 32.8 | 0.44 (0.22–1.18) | 0.5 (0.3–1.2) |