Table 1 Mean values, standard deviation (SD) for girls and boys separately and combined and Cronbach's alpha values.
| Â | Â | Â | Fruit | Vegetables | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Scale | Items | Range | Girls Mean (SD) | Boys Mean (SD) | All Mean (SD) | Cronbach's alpha | Girls Mean (SD) | Boys Mean (SD) | All Mean (SD) | Cronbach's alpha |
Intake (FFQ) | Â | 8-point scale converted into times per day | 1.00 (0.81) | 0.84 (0.78) | 0.91 (0.80) | - | 1.17 (1.16) | 0.85 (0.95) | 1.00 (1.06) | - |
Personal | ||||||||||
Knowledge of recommendations | 1 | 8-point scale recoded (0) less than twice a day (1) twice a day or more | 0.56 (0.50) | 0.50 (0.50) | 0.53 (0.50) | - | 0.39 (0.49) | 0.36 (0.48) | 0.38 (0.48) | - |
Attitudes | 2 | 5-point scale from (2) I fully agree to (-2) I fully disagree | 1.25 (0.73) | 1.05 (0.90) | 1.15 (0.83) | 0.69 | 0.94 (0.93) | 0.79 (1.03) | 0.86 (0.99) | 0.80 |
Liking | 2 | 5-point scale from (2) I fully agree to (-2) I fully disagree | 1.59 (0.54) | 1.34 (0.82) | 1.46 (0.71) | 0.71 | 1.06 (0.98) | 0.85 (1.08) | 0.95 (1.04) | 0.83 |
Self-efficacy | 2 | 5-point scale from (2) I fully agree to (-2) I fully disagree | 1.30 (0.80) | 1.09 (0.93) | 1.19 (0.88) | 0.44 | 1.12 (0.90) | 0.85 (1.00) | 0.97 (0.96) | 0.80 |
Preferences | 12 | 5 point scale from (2) like very much to (-2) dislike very much | 1.27 (0.48) | 1.13 (0.61) | 1.19 (0.56) | - | 0.48 (0.71) | 0.42 (0.80) | 0.45 (0.75) | - |
Perceived barriers | 4 | 5-point scale from (2) I fully agree to (-2) I fully disagree | -1.64 (0.55) | -1.37 (0.78) | -1.50 (0.69) | 0.73 | -1.52 (0.68) | -1.23 (0.91) | -1.37 (0.82) | 0.80 |
Perceived socio-environmental | ||||||||||
Modelling | 3 | 5-point scale from (2) I fully agree to (-2) I fully disagree | 0.61 (0.71) | 0.49 (0.71) | 0.54 (0.71) | 0.59 | 0.52 (0.72) | 0.39 (0.73) | 0.45 (0.73) | 0.68 |
Active parental encouragement | 2 | 5-point scale from (2) I fully agree to (-2) I fully disagree | 0.65 (1.09) | 0.53 (1.19) | 0.58 (1.14) | 0.80 | 0.36 (1.08) | 0.26 (1.23) | 0.30 (1.16) | 0.87 |
Demand family rule | 1 | 5 point scale (2) yes always to (-2) never | 0.32 (1.14) | 0.04 (1.24) | 0.18 (1.20) | - | 0.08 (1.13) | -0.09 (1.24) | -0.01 (1.19) | - |
Allow family rule | 1 | 5 point scale (2) yes always to (-2) never | 1.71 (0.70) | 1.62 (0.77) | 1.66 (0.74) | - | 1.52 (0.78) | 1.30 (1.01) | 1.40 (0.91) | - |
Perceived physical-environmental | ||||||||||
Availability at home | 3 | 5 point scale (2) yes always to (-2) never | 1.01 (0.62) | 0.94 (0.68) | 0.97 (0.65) | 0.59 | 0.82 (0.72) | 0.70 (0.84) | 0.76 (0.78) | 0.68 |
Availability at school | 1 | 5 point scale (2) yes always to (-2) never | -0.64 (1.52) | -0.75 (1.50) | -0.69 (1.51) | - | -1.02 (1.32) | -1.11 (1.22) | -1.06 (1.27) | - |