Convalescent Hib antibody geometric mean concentrations, with 95% CI
| All cases | Meningitis cases only | Epiglottitis cases only | ||||
|---|---|---|---|---|---|---|
| Vaccination status | Raw | Adjusted | Raw | Adjusted | Raw | Adjusted |
| Raw data and adjusted data from regression model controlling for age and timing of serum collection shown. | ||||||
| Vaccinated | 10.81 (6.62 to 17.66) | 3.86 (2.96 to 5.03) | 8.32 (4.47 to 15.46) | 3.78 (2.78 to 5.15) | 22.08 (11.18 to 43.61) | 4.06 (2.32 to 7.12) |
| (no. cases) | 93 | 93 | 68 | 68 | 25 | 25 |
| Unvaccinated | 1.06 (0.61 to 1.84) | 3.01 (2.14 to 4.23) | 0.33 (0.18 to 0.60) | 1.48 (0.90 to 2.21) | 3.57 (1.60 to 7.99) | 6.32 (3.92 to 10.20) |
| (no. cases) | 92 | 92 | 47 | 47 | 45 | 45 |
| Student’s t test p value* | <0.0001 | 0.25 | <0.0001 | 0.0003 | 0.003 | 0.25 |