FIGURE 2.

Multivariable adjusted associations of sleep curtailment at each age period with BMI z score at mid-childhood. Models of curtailed sleep in the later age periods are adjusted for curtailed sleep in earlier age periods. The models of curtailed sleep from age 3 to 4 years were adjusted for sleep duration from age 6 months to 2 years; models of curtailed sleep from age 5 to 7 years were adjusted for curtailed sleep from age 6 months to 2 years and 3 to 4 years, as well as for maternal age, education, BMI, and parity; household income; and child race/ethnicity.