Episodes | PCV-7 group (n = 811) | Control group (n = 744) | RR | 95% CI | P |
---|---|---|---|---|---|
Total number of AOM cases during follow-up | 637 | 698 | Â | Â | Â |
Episodes/100 child-years | 39.2 | 46.9 | 0.83 | 0.61–1.02 | 0.02 |
AOM in children aged 6–12 months | 156 | 156 |  |  |  |
Episodes/100 child-years | 38.4 | 41.9 | 0.91 | 0.75–1.20 | 0.06 |
AOM in children aged 13–18 months | 195 | 220 |  |  |  |
Episodes/100 child-years | 48.0 | 59,1 | 0.81 | 0.76–1.02 | 0.04 |
AOM in children aged 19–24 months | 144 | 162 |  |  |  |
Episodes/100 child-years | 35.5 | 43.5 | 0.82 | 0.62–1.24 | 0.04 |
AOM in children aged 25–30 months | 142 | 160 |  |  |  |
Episodes/100 child-years | 35.0 | 43.0 | 0.81 | 0.61–1.20 | 0.04 |