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Table 3 Effects at 8 months mid-way assessment of the HEIA study, for all and by gender

From: Changes in adolescents' intake of sugar-sweetened beverages and sedentary behaviour: Results at 8 month mid-way assessment of the HEIA study - a comprehensive, multi-component school-based randomized trial

 

8 months mid-way assessment

 

8 months mid-way assessment

 

Total sample

 

Girls

 

Boys

 
 

Control

Intervention

 

Control

Intervention

 

Control

Intervention

 
 

Mean†

CI

Mean†

CI

p

Mean†

CI

Mean†

CI

p

Mean†

CI

Mean†

CI

p

 

n‡ = 840

n‡ = 469

 

n‡ = 416

n‡ = 241

 

n‡ = 424

n‡ = 228

 

SSB, dl/d

- week

1.1

(1.0,1.2)

1.0

(0.9,1.1)

0.19

0.9

(0.8,1.0)

0.8

(0.6,0.9)

0.23

1.4

(1.2,1.5)

1.3

(1.1,1.5)

0.52

Group × WS

    

0.80

    

0.30

    

0.71

Group × PE

    

0.81

    

0.92

    

0.76

- weekend

2.4

(2.3,2.5)

2.3

(2.1,2.4)

0.20

2.1

(2.0,2.3)

1.9

(1.7,2.1)

0.04

2.6

(2.5,2.8)

2.6

(2.4,2.9)

1.00

Group × WS

    

0.77

    

0.83

    

0.97

Group × PE

    

0.35

    

0.47

    

0.77

TV/DVD, hours/d

- week

1.6

(1.6,1.7)

1.5

(1.4,1.5)

0.002

1.6

(1.5,1.6)

1.3

(1.2,1.5)

0.001

1.7

(1.6,1.8)

1.6

(1.5,1.7)

0.20

Group × WS

    

0.05

    

0.36

    

0.03

Group × PE

    

0.26

    

0.83

    

0.26

- weekend

2.3

(2.3,2.4)

2.2

(2.1,2.3)

0.04

2.3

(2.2,2.3)

2.1

(1.9,2.2)

0.03

2.4

(2.3,2.5)

2.3

(2.2,2.5)

0.44

Group × WS

    

0.68

    

0.86

    

0.37

Group × PE

    

0.23

    

0.75

    

0.18

Computer/games, hours/d

- week

1.2

(1.1,1.2)

1.1

(1.0,1.2)

0.06

1.0

(1.0,1.1)

0.9

(0.8,0.9)

0.004

1.3

(1.2,1.4)

1.3

(1.2,1.4)

0.76

Group × WS

    

0.01

    

0.08

    

0.02

Group × PE

    

0.31

    

0.34

    

0.73

- weekend

1.6

(1.6,1.7)

1.5

(1.4,1.6)

0.003

1.4

(1.3,1.5)

1.1

(1.0,1.3)

<.001

1.9

(1.8,1.9)

1.8

(1.7,1.9)

0.58

Group × WS

    

0.19

    

0.78

    

0.09

Group × PE

    

0.14

    

0.10

    

0.90

  1. SSB = Sugar-sweetened beverages, Group = intervention and control, WS = weight status, PE = parental educational level
  2. Analyses: Overall for all and by gender, one-way ANCOVA. Group × WS/group × PE: separate interaction analyses for weight status and for parental education, two-way ANCOVA
  3. †Adjusted for pre-test behaviour
  4. ‡n vary slightly