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Table 3 Internal consistency, scale statistics and inter-item correlations of the subscales

From: Validation and reliability of the Malaysian English version of the psychosocial impact of dental aesthetics questionnaire for adolescents

 

N

Cronbach’s α

Scale statistics

Inter-item correlations

Item total correlation

   

M

SD

M

Min

Max

Min

Max

12–14 years

  

 Dental Self-Confidence

202a

0.83

15.99

5.56

0.45

0.33

0.62

0.48

0.72

 Social Impact

202a

0.83

18.54

6.56

0.38

0.17

0.55

0.41

0.66

 Psychological Impact

202a

0.79

16.44

5.25

0.39

0.23

0.57

0.42

0.65

 Aesthetic Concern

203

0.52

4.58

3.58

0.36

0.36

0.36

0.36

0.36

15–17 years

  

 Dental Self-Confidence

190

0.84

15.21

5.29

0.47

0.36

0.64

0.53

0.73

 Social Impact

189a

0.86

19.63

6.78

0.43

0.27

0.60

0.47

0.68

 Psychological Impact

189a

0.83

17.11

5.56

0.46

0.32

0.69

0.49

0.76

 Aesthetic Concern

190

0.62

4.74

3.30

0.45

0.45

0.45

0.45

0.45

12–17 years

  

 Dental Self-Confidence

392a

0.84

15.57

5.44

0.46

0.36

0.63

0.54

0.70

 Social Impact

391a

0.85

19.07

6.69

0.41

0.25

0.51

0.48

0.65

 Psychological Impact

391a

0.81

16.76

5.41

0.43

0.29

0.63

0.45

0.70

 Aesthetic Concern

393

0.56

4.66

1.86

0.47

0.40

0.55

0.48

0.60

  1. aListwise deletion of missing data (i.e., entire observation of individuals omitted when any of the variables were missing)