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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 variables Study arm Mean (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 viewing ST and Snacking 198.00 (169.82) 168.33 (255.43) −27.25 (−92.85, 38.35)
ST only 166.20 (193.34) 130.76 (138.05) −35.44 (− 107.35, 36.47)
Snacking only 118.57 (155.02) 139.61 (168.50) 19.61 (−112.43, 151.66)
Control 119.13 (142.26) 123.80 (99.00) 4.66 (−85.52, 94.85)
Weekend TV/DVD viewing ST and Snacking 215.90 (141.89) 160.61 (105.46) −47.25 (−88.33, −6.16)
ST only 161.48 (107.74) 147.88 (103.44) −13.60 (−74.61, 47.41)
Snacking only 115.71 (97.46) 145.76 (122.76) 30.38 (−46.85, 107.62)
Control 132.26 (62.67) 152.93 (91.66) 20.66 (−11.70, 53.03)
School day computer games ST and Snacking 84.70 (177.13) 54.73 (150.16) −23.52 (− 131.68, 84.62)
ST only 93.69 (132.15) 32.52 (53.22) −58.34 (−117.78, 1.08)
Snacking only 49.00 (47.97) 59.61 (63.65) 6.84 (−32.71, 46.40)
Control 69.64 (104.26) 59.28 (73.98) −10.35 (−75.95, 55.24)
Weekend day computer games ST and Snacking 137.05 (246.39) 88.00 (177.39) −33.52 (− 148.29, 81.23)
ST only 107.82 (98.86) 60.04 (88.77) −42.56 (−88.00, 2.87)
Snacking only 89.00 (76.79) 88.84 (105.97) 11.46 (−72.98, 95.90)
Control 110.00 (125.88) 75.00 (102.04) −35.00 (−92.14, 22.14)
School day smartphone use ST and Snacking 52.69 (60.78) 58.50 (80.52) 15.38 (−32.36, 63.13)
ST only 57.66 (95.71) 83.75 (135.38) 15.66 (−6.70, 38.03)
Snacking only 31.50 (85.10) 11.30 (20.83) −22.61 (− 67.78, 22.55)
Control 50.35 (65.94) 46.15 (49.55) −8.07 (−49.38, 33.23)
Weekend day smartphone use ST and Snacking 47.50 (56.06) 57.89 (96.02) 31.25 (−24.40, 86.90)
ST only 49.33 (71.59) 81.00 (112.92) 27.60 (−17.83, 73.03)
Snacking only 98.35 (36.88) 28.15 (58.51) −77.76 (−277.11, 121.57)
Control 51.07 (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