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Participant demographics.
| Participant Demographics | 6 months | 12 months |
|---|---|---|
| Age (days) M (SD) and Range | 192.9 (9.5) 166-220 |
378.2 (12.0) 361-448 |
| First Child | 68% | 58% |
| Primary (Mother | Employed) | 94% | 94% | 95% | 95% |
| Participant Race (Caucasian, Asian, More than one race) | 76%, 4%, 19% | 79%, 4%, 17% |
| Primary: College Education (None, Some, Graduate) | 0%, 12%, 87% | 1%, 9%, 89% |
| Family Income (<$35k, $35-75k, >$75) | 5%, 23%, 67%, | 6%, 32%, 65%, |
