|
Frequency of respiratory tract infections (RTIs) during follow-up. |
|||||
| Episodes |
PCV-7 group (n = 811) |
Control group (n = 744) |
RR |
95% CI |
P |
|
|
|||||
| Total number of RTIs during follow-up |
3,877 |
3,460 |
|||
| Episodes/100 child-years |
239.0 |
232.5 |
1.02 |
0.98–1.07 |
0.32 |
| RTIs in children aged 6–12 months |
1,035 |
928 |
|||
| Episodes/100 child-years |
255.2 |
249.4 |
1.02 |
0.94–1.12 |
0.62 |
| RTIs in children aged 13–18 months |
1,185 |
986 |
|||
| Episodes/100 child-years |
292.2 |
265.0 |
1.10 |
1.00–1.18 |
0.055 |
| RTIs in children aged 19–24 months |
998 |
872 |
|||
| Episodes/100 child-years |
246.1 |
234.4 |
1.05 |
0.96–1.15 |
0.31 |
| RTIs in children aged 25–30 months |
659 |
674 |
|||
| Episodes/100 child-years |
162.5 |
181.1 |
0.90 |
0.81–1.00 |
0.047 |
|
RR = relative risk; 95% CI = 95% confidence interval. | |||||
Esposito et al. Respiratory Research 2007 8:12 doi:10.1186/1465-9921-8-12 |
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