Table 1.
Subject characteristics by experimental group
| low-5 | high-5 | low-10 | high-10 | |
| Dams | ||||
| Age (y)a | 6.5 ± 1.1 | 6.5 ± 1.3 | 10.3 ± 0.5 | 10.2 ± 0.7 |
| Number | 14 | 15 | 12 | 11 |
| Infants | ||||
| Age (mo)b | 5.4 ± 1.4 | 5.2 ± 1.3 | 4.9 ± 1.3 | 5.1 ± 1.1 |
| Number | 14 | 15 | 12 | 11 |
| Male:femalec | 6:8 | 5:10 | 6:6 | 8:3 |
Data are given as median ± 1 SD.
a
Significant difference between respective 5- and 10-y postimmunization groups (P < 0.0001), but no significant difference between social rank groups at the same time point.
b
No significant difference between experimental groups.
c
Infant sex not a significant covariate in mixed models.