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Table 3 Age differences of child’s BMI and health behaviors in both boys and girls

From: Association of parental body mass index (BMI) with child’s health behaviors and child’s BMI depend on child’s age

Child   Preschool Elementary school Middle School Total/Average
Boys N 299 617 98 1014
% of 95th BMI percentile 99.9 ± 1.1 103.3 ± 0.8* 100.1 ± 1.9 101.1 ± 1.3
FV Intake (times/day) 2.6 ± 0.1 1.9 ± 0.1*** 1.9 ± 0.2*** 2.1 ± 0.1
SSB Intake (times/day) 0.9 ± 0.1 1.1 ± 0.1 1.1 ± 1.1 1.0 ± 0.4
Screen Time (hrs/wk) 22.6 ± 0.1 27.9 ± 0.7*** 30.5 ± 1.6*** 27.0 ± 1.1
7 days/wk. of PA 60 min/day (OR) 0.6 ± 0.0 0.5 ± 0.0** 0.4 ± 0.1*** 0.5 ± 0.0
Girls N 282 666 77 1025
% of 95th BMI percentile 99.1 ± 1.2 100.8 ± 0.9 98.2 ± 2.1 99.3 ± 1.4
FV Intake (times/day) 2.6 ± 0.1 2.2 ± 0.1*** 2.0 ± 0.2** 2.3 ± 0.1
SSB Intake (times/day) 0.9 ± 0.1 1.0 ± 0.1 1.2 ± 0.1* 1.1 ± 0.1
Screen Time (hrs/wk) 20.6 ± 0.8 24.5 ± 0.6*** 29.2 ± 1.5*** 24.8 ± 1.0
7 days/wk. of PA 60 min/day (OR) 0.6 ± 0.0 0.4 ± 0.0*** 0.3 ± 0.1** 0.4 ± 0.0
  1. Values are model-predicted means±SE, adjusted for mean of parental BMI and different numbers of children across the sites and cities
  2. *p < .05, **p = .001, ***p < .001
  3. Preschool is the reference group