Table 3.

(Online). Coefficients and confidence intervals from linear regression models of sleep duration and log-transformed telomere length (N=1,567)

	(1) Unadjusted	(2) Age-adjusted	(3) All covariates
Intercept	1.796*** 1.657, 1.936)	1.755*** (1.261, 2.250)	1.569*** (1.108, 2.031)
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		−0.001 (−0.005, 0.004)	−0.003+ (−0.007, 0.0002)
Mother’s age at child’s birth		0.002 (−0.001, 0.005)	−0.001 (−0.004, 0.003)
Father’s age at child’s birth		0.004+ (−0.001, 0.008)	0.003 (−0.001, 0.007)
Child low birth weight (ref: >2,500 grams)			−0.012 (−0.063, 0.039)
Child male (ref: female)			−0.014 (−0.040, 0.011)
Child’s puberty score			0.015 (−0.040, 0.070)
Child’s BMI			0.001 (−0.002, 0.004)
Child ever diagnosed with ADHD/ADD			−0.014 (−0.064, 0.036)
Child ever diagnosed with autism			0.062 (−0.121, 0.246)
Mother’s telomere length (logged)			0.324*** (0.273, 0.376)
Mother non-Hispanic black (ref: non-Hispanic white)			0.001 (−0.058, 0.061)
Mother Hispanic (ref: non-Hispanic white)			−0.014 (−0.064, 0.035)
Mother other race/ethnicity (ref: non-Hispanic white)			−0.052 (−0.133, 0.029)
Mother foreign born			0.071*** (0.046, 0.096)
Mother has high school diploma or GED (ref: less than high school education)			0.002 (−0.032, 0.037)
Mother attended some college (ref: less than high school education)			0.025 (−0.024, 0.075)
Mother is a college graduate (ref: less than high school education)			0.048 (−0.017, 0.113)
Log of household income			−0.001 (−0.016, 0.014)
Biological parents married (ref: no relationship)			0.059** (0.017, 0.100)
Biological parents cohabiting (ref: no relationship)			0.006 (−0.029, 0.042)
Number of children in home			0.003 (−0.012, 0.017)
City fixed effects			✓
R2	0.008	0.020	0.141

^a+p<0.10; *p<0.05; **p<0.01; ***p<0.001