Table 1

Mean values, standard deviation (SD) for girls and boys separately and combined and Cronbach's alpha values.

    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)

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)

-


Kristjansdottir et al. International Journal of Behavioral Nutrition and Physical Activity 2006 3:41   doi:10.1186/1479-5868-3-41

Open Data