Table 3 Internal consistency (Cronbach's alpha coefficient), Unidimensionality (INFIT) and Differential Item Functioning (DIF) analyses of the 10 dimensions of VSPA between the Brazilian and the French adolescents
Dimension/Items | INFIT Brazil | INFIT France | DIF - Non-uniform |
|---|---|---|---|
Vitality | |||
15 - Happy | 1.1 | 1.1 | 0,8 |
31 -Good mood | 0.9 | 1.0 | 1,1 |
32- Bright side life | 0.8 | 0.8 | 0,2 |
33- Fine round you | 0.9 | 0.9 | 0,9 |
34 - Confidence in yourself | 1.2 | 1.2 | 4,6 |
Cronbach's alpha | 0.85 | 0.84 | |
Relationship with teachers | |||
22- Helped teachers | 0.8 | 0.9 | 0,7 |
23- Understood teachers | 0.9 | 0.8 | 0,3 |
24 - Accepted teachers | 1.3 | 1.2 | 0,0 |
Cronbach's alpha | 0.79 | 0.77 | |
School performance | |||
21- Happy with School grades | 1.0 | 1.0 | 0,0 |
35- Good School results | 1.0 | 1.0 | 0,1 |
Cronbach's alpha | 0.84 | 0.83 | |
Relationship with parents | |||
6 - Tell Problems to parents | 0.9 | 0.7 | 0,1 |
7 - Talk to parents | 1.2 | 1.1 | 0,1 |
20 - Understood by parents | 0.9 | 1.1 | 2,0 |
30- Parents give you advise | 1.0 | 1.2 | 1,7 |
Cronbach's alpha | 0.80 | 0.80 | |
Relationship with friends | |||
3 - Talk to your friends | 1.0 | 0.9 | 0,8 |
4 - Confide problems to friends | 1.0 | 1.2 | 1,9 |
5 - Express to friends | 1.2 | 1.1 | 0,1 |
16 - Helped by friends | 0.8 | 0.9 | 0,1 |
17 - Understood by friends | 0.9 | 0.8 | 0,2 |
Cronbach's alpha | 0.77 | 0.78 | |
Leisure activities | |||
1- Meet your friends | 0.9 | 0.8 | 3,1 |
2 - Go downtown with your friends | 0.9 | 1.0 | 1,3 |
8 - Invited home by your friends | 1.0 | 1.0 | 1,1 |
9- Play outside | 1.1 | 1.2 | 0,2 |
Cronbach's alpha | 0.71 | 0.81 | |
Body image | |||
25 - Unsatisfied with your apparence | 1.0 | 1.0 | 0,7 |
26 - Fat/thin/short/tall | 1.0 | 1.0 | 0,5 |
Cronbach's alpha | 0.64 | 0.87 | |
Psychological well-being | |||
10 - Preoccupied | 0.8 | 0.7 | 0,2 |
11- Sad | 1.0 | 0.9 | 0,1 |
12 - Stressed | 1.2 | 1.1 | 0,0 |
13 - Discouraged | 0.7 | 1.1 | 2,1 |
14 - Anxious | 1.3 | 1.2 | 2,7 |
Cronbach's alpha | 0.76 | 0.85 | |
Physical well-being | |||
27 - No energy | 0.9 | 0.8 | 0,8 |
28 - Good physical shape | 1.2 | 1.2 | 6,8 |
29 - Weak or tired | 0.8 | 0.8 | 1,1 |
36 - Pain | 1.0 | 1.1 | 0,6 |
Cronbach's alpha | 0.60 | 0.72 | |
Sexual and sentimental life | |||
18 - Sentimental Life | 0.9 | 0.8 | 0,3 |
19 - Sexual Life | 1.1 | 1.2 | 0,3 |
Cronbach's alpha | 0.70 | 0.72 |