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Table 2 Average time spent on watching television, playing videogames and computer use by week and weekenda

From: School-based intervention on healthy behaviour among Ecuadorian adolescents: effect of a cluster-randomized controlled trial on screen-time

  Baseline After 18 months After 28 months
  Intervention Control Intervention Control Intervention Control
  (n = 686) (n = 684) (n = 616) (n = 608) (n = 547) (n = 531)
Screen-time mean (SD) mean (SD) mean (SD) mean (SD) mean (SD) mean (SD)
TV on a weekday (min/day) 100.10 (81.13) 98.20 (86.01) 117.61 (90.11) 128.39 (96.73) 126.36 (96.67) 122.09 (99.14)
TV on a weekend day (min/day) 162.90 (109.23) 162.06 (112.33) 179.12 (113.93) 196.57 (116.22) 181.26 (119.27) 190.00 (114.02)
Video games on a weekday (min/day) 14.13 (34.17) 15.39 (42.69) 18.46 (46.41) 20.08 (47.82) 26.93 (67.99) 20.90 (46.04)
Video games on a weekend day (min/day) 34.50 (62.74) 36.18 (67.33) 45.63 (81.02) 50.83 (83.52) 47.71 (83.80) 50.56 (81.68)
Computer on a weekday (min/day) 50.86 (53.83) 51.67 (62.95) 101.41 (86.77) 98.58 (87.58) 133.00 (107.25) 122.26 (100.95)
Computer on a weekend day (min/day) 52.17 (71.7) 55.26 (75.74) 112.94 (103.46) 118.38 (110.07) 142.82 (117.92) 142.49 (114.63)
Total screen-time on a weekday (min/day) 165.09 (115.07) 165.26 (132.45) 237.32 (151.62) 246.36 (153.15) 286.29 (184.67) 265.25 (164.85)
Total screen-time on a weekend day (min/day) 249.58 (171.27) 253.51 (181.98) 337.69 (206.27) 365.78 (209.09) 371.79 (214.91) 383.05 (211.68)
Percentage of adolescents who exceed 180 min/day on screen-time behaviours 68.9 % 66.5 % 86.3 % 89.2 % 89.6 % 91.7 %
  1. TV Television
  2. aStandard deviation adjusted for clustering