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Demographic characteristics of participants by group.
| Group | N | Gender | Mean age ± SD |
|||
|---|---|---|---|---|---|---|
| Mothers, y | Fathers, y | Infants at T1, mos. | Infants at T2, mos. | |||
| TxMF | 22 | 11 M, 11 F | 31.9 ± 1.8 | 35.5 ± 2.2 | 3.1 ± 0.3 | 12.2 ± 0.6 |
| TxM | 22 | 11 M, 11 F | 31.7 ± 1.9 | 36.2 ± 1.8 | 3.2 ± 0.2 | 11.9 ± 0.4 |
| Con | 22 | 11 M, 11 F | 31.2 ± 2.0 | 38.1 ± 3.2 | 3.4 ± 0.3 | 12.1 ± 0.5 |
