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Table 3 Children’s screen-time, and change in screen-time by study arm

From: Reducing screen-time and unhealthy snacking in 9–11 year old children: the Kids FIRST pilot randomised controlled trial

Screen-time variablesStudy armMean (SD) minutes/day at baseline (week 0)Mean (SD) minutes/day at post-intervention (week 13)Difference in means (95% CI)
School day TV/DVD viewingST and Snacking198.00 (169.82)168.33 (255.43)−27.25 (−92.85, 38.35)
ST only166.20 (193.34)130.76 (138.05)−35.44 (− 107.35, 36.47)
Snacking only118.57 (155.02)139.61 (168.50)19.61 (−112.43, 151.66)
Control119.13 (142.26)123.80 (99.00)4.66 (−85.52, 94.85)
Weekend TV/DVD viewingST and Snacking215.90 (141.89)160.61 (105.46)−47.25 (−88.33, −6.16)
ST only161.48 (107.74)147.88 (103.44)−13.60 (−74.61, 47.41)
Snacking only115.71 (97.46)145.76 (122.76)30.38 (−46.85, 107.62)
Control132.26 (62.67)152.93 (91.66)20.66 (−11.70, 53.03)
School day computer gamesST and Snacking84.70 (177.13)54.73 (150.16)−23.52 (− 131.68, 84.62)
ST only93.69 (132.15)32.52 (53.22)−58.34 (−117.78, 1.08)
Snacking only49.00 (47.97)59.61 (63.65)6.84 (−32.71, 46.40)
Control69.64 (104.26)59.28 (73.98)−10.35 (−75.95, 55.24)
Weekend day computer gamesST and Snacking137.05 (246.39)88.00 (177.39)−33.52 (− 148.29, 81.23)
ST only107.82 (98.86)60.04 (88.77)−42.56 (−88.00, 2.87)
Snacking only89.00 (76.79)88.84 (105.97)11.46 (−72.98, 95.90)
Control110.00 (125.88)75.00 (102.04)−35.00 (−92.14, 22.14)
School day smartphone useST and Snacking52.69 (60.78)58.50 (80.52)15.38 (−32.36, 63.13)
ST only57.66 (95.71)83.75 (135.38)15.66 (−6.70, 38.03)
Snacking only31.50 (85.10)11.30 (20.83)−22.61 (− 67.78, 22.55)
Control50.35 (65.94)46.15 (49.55)−8.07 (−49.38, 33.23)
Weekend day smartphone useST and Snacking47.50 (56.06)57.89 (96.02)31.25 (−24.40, 86.90)
ST only49.33 (71.59)81.00 (112.92)27.60 (−17.83, 73.03)
Snacking only98.35 (36.88)28.15 (58.51)−77.76 (−277.11, 121.57)
Control51.07 (84.31)43.46 (49.47)−11.53 (−65.62, 42.54)
  1. ST screen-time
  2. Difference in means were calculated as post-intervention mean minus baseline mean
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