| HepB-CpG-exposed infants | HepB-alum-exposed infants | Total | p-value | |
| |
N = 68 n (%) |
N = 95 n (%) |
N = 163 n (%) |
|
| Single/multiple gestation | .09 | |||
| Singleton | 68 (100.0) | 91 (95.8) | 159 (97.5) | |
| Twins | 0 (0.0) | 4 (4.2) | 4 (2.5) | |
| Triplets or greater | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Infant sex | .60 | |||
| Male | 31 (45.6) | 43 (45.3) | 74 (45.4) | |
| Female | 36 (52.9) | 48 (50.5) | 84 (51.5) | |
| Intersex/other/unknown | 1 (1.5) | 4 (4.2) | 5 (3.1) | |
| Gestational age at birth, weeks | .75 | |||
| <28 | 0 (0.0) | 1 (1.1) | 1 (0.6) | |
| 28-31 | 2 (2.9) | 2 (2.1) | 4 (2.5) | |
| 32-36 | 8 (11.8) | 10 (10.5) | 18 (11.0) | |
| 37-39 | 47 (69.1) | 62 (65.3) | 109 (66.9) | |
| ≥40 | 11 (16.2) | 20 (21.1) | 31 (19.0) | |
| Gestational age at birth, weeks | .46 | |||
| Mean ± sd | 37.93 ± 2.13 | 38.06 ± 2.63 | 38.01 ± 2.43 | |
| Median (IQR) | 38 (37-39) | 39 (37-39) | 39 (37-39) | |
| Birth weight, g | .89 | |||
| Mean ± sd | 3286.01 ± 619.56 | 3296.52 ± 665.50 | 3292.01 ± 644.15 | |
| Median (IQR) | 3330 (3000, 3580) | 3320 (2960, 3660) | 3325 (2990, 3635) | |
| Missing | 1 (1.5) | 6 (6.3) | 7 (4.3) | |
| Birth length, cm | .42 | |||
| Mean ± sd | 49.87 ± 3.33 | 49.87 ± 6.84 | 49.87 ± 5.46 | |
| Median (IQR) | 50 (48-52) | 51 (49-52) | 50 (48-52) | |
| Missing | 2 (2.9) | 20 (21.1) | 22 (13.5) | |
| Head circumference, cm | .85 | |||
| Mean (sd) | 33.94 (1.94) | 33.86 (1.97) | 33.90 (1.95) | |
| Median (IQR) | 34 (33-36) | 34 (33-35) | 34 (33-35) | |
| Missing | 2 (2.9) | 27 (28.4) | 29 (17.8) | |
| Birth location | <.01 | |||
| KPSC hospital | 66 (97.1) | 67 (73.6) | 133 (83.6) | |
| Non-KPSC hospital/non-hospital setting | 2 (2.9) | 28 (29.5) | 30 (18.4) |
Abbreviations: sd, standard deviation; IQR, interquartile range.