Table 1.
Characteristics of the sample (n=366)
| Variable | M (SD) or N (%) |
|---|---|
| Child BMI z-score | 0.75 (1.07) |
| Child rate of BMIz change (per year) (n=273) | 0..048 (0.432) |
| Child Overweight or Obese | 135 (37%) |
| Child age (years) | 4.11 (0.54) |
| Child sex | |
| Male | 184 (50%) |
| Female | 182 (50%) |
| Child race/ethnicity | |
| White, non-Hispanic/Latino | 208 (57%) |
| Black | 56 (15%) |
| Biracial | 59 (16%) |
| Hispanic/Latino | 40 (11%) |
| Other | 3 (1%) |
| Maternal education | |
| < High school | 51 (15%) |
| High school diploma or
Generalized Equivalency Diploma (GED) |
104 (31%) |
| Some college | 177 (53%) |
| Maternal BMI | 32.24 (8.87) |
| Family Income-to-Needs Ratio (1.0=poverty) | 0.88 (0.78) |
| Sleep Variables | |
| Total nocturnal sleep duration (hours per night) | 10.48 (0.76) |
| Child’s usual bedtime (weeknights) | 8:35pm (45 min) |
| Child’s usual bedtime (weekend nights) | 9:40pm (65 min) |
| Weekday to weekend bedtime delay (minutes) | 64.68 (50.76) |
| Number of days napping per week | 3.38 (2.50) |
| Daily nap duration (minutes) | 75.24 (53.70) |