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Non-Hispanic white boys: predicted sleep by TV and bedroom TV. Predicted sleep: longitudinal mixed effects model (random intercepts, random slopes for age and age2) adjusted for age, age2, race/ethnicity, gender, education, income, and gender-interactions with mean-centered and subject-specific mean TV. Fixed values: boys (white or racial/ethnic minority), household income >$70 000, maternal education ≥ college. Bedroom TV (never/ever).
