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Effect of Media Use on Adolescent Body Weight

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Direct paths from hours of media use to sleep hours (β = −0.03, P = .008), timing of last food intake (β = 0.04, P = .002), and unhealthy eating behaviors (β = 0.15, P = <.001) were significant. The paths from sleep hours include timing of last food intake (β = −0.13, P = .01), unhealthy eating behaviors (β = −0.21, P = .27), and BMI (β = −3.42, P = <.001). The paths from timing of last food intake include unhealthy eating behaviors (β = −0.52, P = .03) and BMI (β = −2.28, P = .003). Lastly, the path from unhealthy eating behaviors includes BMI (β = −0.32, P = .08).

Figure 1.
Mediation model examining the association between hours of media use and body mass index (BMI) percentile among adolescent males (8th and 11th grade students) in Texas, 2015–2016. Data are from the 2015–2016 School Physical Activity and Nutrition Survey (32).

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Direct paths from hours of media use include sleep hours (β = −0.02, P = .14), timing of last food intake (β = 0.06, P < .001), and unhealthy eating behaviors (β = 0.26, P = <.001). The paths from sleep hours include timing of last food intake (β = −0.22, P = .001), unhealthy eating behaviors (β = −0.06, P = .75), and BMI (β = −2.47, P = <.001). The paths from timing of last food intake include unhealthy eating behaviors (β = −0.66, P = .001) and BMI (β = −2.04, P = .002). Lastly, the path from unhealthy eating behaviors includes BMI (β = −0.36, P = .004).

Figure 2.
Mediation model examining the association between hours of media use with body mass index (BMI) percentile among adolescent girls (8th and 11th grade students) in Texas, 2015–2016. Data are from the 2015–2016 School Physical Activity and Nutrition Survey (32).

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