Table 2.
(1) Unadjusted | (2) Age-adjusted | (3) All covariates | |
---|---|---|---|
|
|||
Hours of sleep | 0.026** (0.011, 0.042) | 0.022** (0.007, 0.037) | 0.015* (0.002, 0.029) |
Child’s age in months | ✓ | ✓ | |
Mother’s age at child’s birth | ✓ | ✓ | |
Father’s age at child’s birth | ✓ | ✓ | |
Child and family characteristicsb | ✓ | ||
City in which the child was born | ✓ | ||
| |||
R2 | 0.008 | 0.020 | 0.141 |
+p<0.10; *p<0.05; **p<0.01; ***p<0.001
These analyses account for the child’s age in months at age 9, whether the child was low birth weight (< 2,500 grams), child’s sex, child’s pubertal progression score, child’s BMI, whether the child was ever diagnosed with ADHD/ADD, whether the child was ever diagnosed with autism, mother’s logged telomere length, mother’s race/ethnicity, mother’s nativity, mother’s educational attainment at the child’s birth, logged maternal household income at the child’s birth, whether biological parents were married or cohabiting at the child’s birth, and the number of children in the home at the child’s birth.