Table 1.
Characteristics of mothers and infants participating in the Nurture study (n=666)
| Infant Characteristics | Mean (SD) |
|---|---|
| Birth weight for gestational age z-score | ‒0.3 (0.9) |
| Age at 9-month home visit, months | 9.5 (0.5) |
| Age at 12-month home visit, months | 12.5 (0.8) |
| Weight-for-length Z-score at 9 months | 0.6 (1.0) |
| Weight-for-length Z-score at 12 months | 0.6 (1.0) |
| Any breastfeeding, months | 3.7 (4.6) |
| Sleep duration at 6 months, hours per day | 13.0 (2.3) |
| Sleep duration at 12 months, hours per day | 12.6 (1.8) |
| Screen time at 6 months, hours per week | 2.4 (6.1) |
| Screen time at 12 months, hours per week | 2.6 (6.4) |
| Percent (frequency) | |
| Sex, female | 49.0 (326) |
| Race | |
| Black | 69.7 (457) |
| White | 15.2 (100) |
| Other race/more than one race | 15.1 (99) |
| Ethnicity, Latino/a | 9.4 (59) |
| Maternal Characteristics | Mean (SD) |
| Age, years | 27.3 (5.8) |
| Pre-pregnancy body mass index, kg/m2 | 29.9 (9.2) |
| Percent (frequency) | |
| Race | |
| Black | 71.4 (472) |
| White | 19.2 (127) |
| Other race/more than one race | 9.4 (62) |
| Ethnicity, Latina | 6.5 (43) |
| Education | |
| ≤High school graduate | 47.8 (317) |
| Some college, college graduate, or graduate degree | 52.2 (346) |
| Marital status | |
| Married or living with partner | 58.8 (272) |
| Never married, divorced, separated, other | 41.2 (191) |
| Household Characteristics | Mean (SD) |
| Number of adults in the household | 3.7 (2.9) |
| Number of children in the household | 1.3 (1.6) |
| Household chaos score at 6 months | 24.3 (6.4) |
| Household chaos score at 12 months | 25.1 (6.7) |
| Percent (frequency) | |
| Annual household income | |
| < $20,000 | 50.4 (233) |
| ≥ $20,001 | 49.6 (229) |