Table 2.
Incidence of Events Pre- and Post-immunization (/1000 Patient Days)
| Event | Pre-immunization | Post-immunization | Rate ratio (95% CI) | Adjusted rate ratioa (95% CI) |
|---|---|---|---|---|
| Sepsis evaluation | 5.4 | 19.3 | 3.5 (3.1–4.1) | 3.7 (3.2–4.4) |
| Increased respiratory support | 6.6 | 14.0 | 2.1 (1.9–2.4) | 2.1 (1.9–2.5) |
| Intubation | 2.0 | 3.6 | 1.8 (1.4–2.3) | 1.7 (1.3–2.2) |
| Seizure | 0.2 | 0.1 | 0.3 (0.1–1.0) | 0.3 (0.1–1.1) |
Abbreviation: CI, confidence interval.
a
Incidence rate ratio adjusted for gestational age at birth, small-for-gestational-age status, history of sepsis, postnatal age, and postnatal weight.