Table 1 Descriptive characteristics of adolescent participants (n = 527)

N (%)

527

253 (48)

274 (52)

Age, years (mean (SD))

11.64 (0.48)

11.59 (0.49)

11.68 (0.47)

TV/DVD viewing (mins/day) (mean (SD))

190.98 (112.77)

192.55 (113.98)

189.56 (111.87)

  > 120 min/day, %

69.7

70.2

70

Fruit and vegetable intake (frequency of consumption/day) (mean (SD))

3.77 (2.58)

3.80 (2.67)

3.75 (2.49)

  < 5 a day (frequency of consumption/day), %

73.6

72.7

74.5

Energy-dense snack intake (frequency of consumption/day) (mean (SD))

3.77 (3.07)

3.93 (3.31)

3.62 (2.83)

  > 2.8 a day (frequency of consumption/day), %

49.1

47.4

50.7

 None or one risk behaviour

157 (29.8)

81 (32)

76 (27.7)

 Low FV / high ED

43 (8.2)

21 (8.3)

22 (8)

 High ST / low FV

134 (25.4)

62 (24.5)

72 (26.3)

 High ST / high ED

50 (9.5)

23 (9.1)

27 (9.9)

 3 risk behaviours (Low FV / high ST / high ED)

143 (27.1)

66 (26.1)

77 (28.1)