IgG geometric mean concentrations in response to vaccine antigens for preterm and term infants one month after third dose of vaccines
| Antibody | Preterm | Term | p Value* |
|---|---|---|---|
| Values in parentheses are 95% confidence intervals. | |||
| *t Test. | |||
| FHA, filamentous haemagglutinin; PRN, pertactin; PT, pertussis toxin. | |||
| Diphtheria | 1.50 (1.33 to 1.68) n = 120 | 1.75 (1.36 to 2.26) n = 46 | 0.20 |
| Tetanus | 1.09 (0.94 to 1.26) n = 121 | 1.30 (1.03 to 1.63) n = 47 | 0.20 |
| FHA | 54.7 (48.2 to 62.1) n = 119 | 59.8 (48.7 to 73.4) n = 47 | 0.46 |
| PRN | 82.6 (70.1 to 97.3) n = 122 | 86.6 (64.9 to 115.4) n = 49 | 0.77 |
| PT | 21.0 (18.4 to 23.9) n = 122 | 33.4 (28.2 to 39.5) n = 50 | <0.001 |