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Table 2 Cross-sectional analysis of differences in screen time across BMI categories.

From: Stability of television viewing and electronic game/computer use in a prospective cohort study of Australian children: relationship with body mass index

Activity BMI category Total sample Males Females
   m (SD) or % β or OR (95% CI) m (SD) or % β or OR (95% CI) m (SD) or % β or OR (95% CI)
Baseline        
TV viewing (hrs/wk) Non-overweight 13.5 (7.4) - 13.9 (7.6) - 13.1 (7.1) -
  Overweight 15.6 (8.5) 1.9 (0.7, 3.1) 16.4 (8.5) 2.0 (0.2, 3.9) 15.0 (8.5) 1.9 (0.3, 3.5)
  Obese 16.7 (7.8) 3.4 (1.3, 5.5) 15.0 (8.1) 1.5 (-1.9, 4.9) 18.0 (7.4) 5.0 (2.2, 7.7)
Games/computer (hrs/wk) Non-overweight 3.9 (4.1) - 4.9 (4.6) - 2.9 (3.2) -
  Overweight 3.5 (3.8) -0.3 (-0.9, 0.3) 4.3 (4.2) -0.6 (-1.6, 0.5) 2.9 (3.3) 0.0 (-0.7, 0.8)
  Obese 5.4 (4.6) 1.5 (0.4, 2.7) 6.3 (5.8) 1.4 (-0.6, 3.3) 4.7 (3.5) 1.9 (0.6, 3.1)
Total screen time (hrs/wk) Non-overweight 17.4 (8.9) - 18.9 (9.5) - 16.0 (8.1) -
  Overweight 19.2 (10.2) 1.6 (0.2, 3.1) 20.6 (10.7) 1.5 (-0.8, 3.7) 17.9 (9.7) 2.0 (0.1, 3.8)
  Obese 22.1 (8.9) 4.9 (2.4, 7.5) 21.3 (9.4) 2.9 (-1.3, 7.0) 22.7 (8.6) 6.8 (3.7, 10.0)
Meet guidelines* Non-overweight 42.4% - 37.6% - 47.1% -
  Overweight 34.5% 0.7 (0.5, 1.0) 27.7% 0.7 (0.4, 1.1) 40.4% 0.8 (0.5, 1.2)
  Obese 23.5% 0.4 (0.2, 0.8) 27.3% 0.5 (0.2, 1.5) 20.7% 0.3 (0.1, 0.7)
Follow-up        
TV viewing (hrs/wk) Non-overweight 14.6 (6.7) - 14.6 (6.8) - 14.6 (6.6) -
  Overweight 17.0 (7.9) 2.4 (1.4, 3.3) 17.2 (8.9) 2.6 (1.1, 4.1) 16.8 (7.1) 2.2 (0.9, 3.4)
  Obese 17.1 (6.4) 2.6 (0.6, 4.5) 15.8 (6.3) 1.2 (-1.8, 4.2) 18.2 (6.4) 3.8 (1.3, 6.3)
Games/computer (hrs/wk) Non-overweight 8.2 (6.5) - 10.0 (6.9) - 6.3 (5.5) -
  Overweight 8.8 (7.4) 0.6 (-0.3,1.5) 11.7 (8.3) 1.6 (0.1, 3.1) 6.4 (5.6) 0.2 (-0.9, 1.2)
  Obese 10.7 (7.6) 2.7 (0.8, 4.5) 14.1 (6.9) 4.0 (1.1, 7.0) 7.9 (7.1) 1.8 (-0.3, 3.9)
Total screen time (hrs/wk) Non-overweight 22.8 (10.0) - 24.6 (10.5) - 20.9 (9.1) -
  Overweight 25.8 (11.9) 3.0 (1.5, 4.4) 28.9 (13.7) 4.2 (1.9, 6.5) 23.2 (9.3) 2.3 (0.6, 4.1)
  Obese 27.8 (10.6) 5.2 (2.4, 8.1) 29.9 (9.5) 5.2 (0.7, 9.8) 26.0 (11.3) 5.6 (2.1, 9.1)
Meet guidelines* Non-overweight 19.0% - 12.7% - 25.5% -
  Overweight 14.2% 0.7 (0.5, 1.1) 9.8% 0.8 (0.4, 1.5) 17.9% 0.6 (0.4, 1.0)
  Obese 11.5% 0.5 (0.2, 1.3) 0% †† 21.4% 0.7 (0.3, 1.9)
  1. Linear regression (or logistic regression for proportion meeting guidelines) analyses adjusted for age.
  2. * Australian Physical Activity Recommendations for children indicate no more than 2 hrs/day should be spent engaged in electronic media use [5].
  3. †† Odds ratio not calculated as no obese boy met guidelines at follow-up