Table 5 Discriminant validity of CPQ_11–14 scores in bivariable analysis

Gender

Boy (n = 377)

4.67 ± 3.44

4.59 ± 4.22

3.62 ± 5.35

2.75 ± 4.63

15.64 ± 14.02

Girl (n = 316)

4.45 ± 3.23

4.65 ± 4.79

3.77 ± 5.78

2.69 ± 4.66

15.56 ± 15.18

Sig

0.390

0.860

0.725

0.851

0.945

Age categories

11–12 years (n = 160)

4.74 ± 3.64

5.06 ± 4.71

4.11 ± 5.23

2.62 ± 4.18

16.52 ± 14.50

13–14 years (n = 533)

4.52 ± 3.25

4.49 ± 4.41

3.57 ± 5.64

2.75 ± 4.77

15.32 ± 14.57

Sig

0.450

0.160

0.281

0.746

0.361

Recruitment level

Public (n = 307)

4.60 ± 3.60

5.21 ± 5.08

4.68 ± 6.44

3.05 ± 4.81

17.55 ± 16.24

Private (n = 386)

4.54 ± 3.13

4.15 ± 3.90

2.90 ± 4.58

2.46 ± 4.50

14.05 ± 12.87

Sig

0.811

0.002

< 0.001

0.099

0.002

Malocclusion category

None/Minor (n = 387)

4.26 ± 3.08

4.13 ± 3.84

2.72 ± 3.95

1.88 ± 3.12

12.99 ± 10.58

Definite (n = 141)

4.82 ± 3.69

4.78 ± 4.61

4.13 ± 5.49

3.06 ± 4.88

16.79 ± 15.37

Severe/handicapping (n = 110)

5.06 ± 3.52

5.73 ± 6.15

6.80 ± 8.73

4.72 ± 7.41

22.31 ± 22.17

Sig

0.037

0.004

< 0.001

< 0.001

< 0.001

Number of decayed teeth

≤4 (n = 570)

4.41 ± 3.30

4.48 ± 4.36

3.34 ± 5.26

2.47 ± 4.03

14.70 ± 13.42

> 4 (n = 119)

5.20 ± 3.35

5.16 ± 4.99

5.24 ± 6.47

3.88 ± 6.77

19.49 ± 18.47

Sig.

0.019

0.131

0.001

0.003

0.001

Number of filled teeth

≤ 2 (n = 542)

4.63 ± 3.37

4.70 ± 4.50

3.86 ± 5.67

2.81 ± 4.54

16.00 ± 14.54

> 2 (n = 147)

4.26 ± 3.15

4.22 ± 4.40

2.95 ± 4.93

2.38 ± 5.01

13.80 ± 14.37

Sig.

0.230

0.250

0.074

0.325

0.104

Missing teeth

≤0 (n = 666)

4.54 ± 3.33

4.53 ± 4.46

3.48 ± 5.28

2.58 ± 4.43

15.13 ± 14.17

> 0 (n = 23)

4.78 ± 3.16

6.43 ± 4.87

9.17 ± 8.94

6.61 ± 7.99

27.00 ± 19.38

Sig.

0.733

0.045

< 0.001

< 0.001

< 0.001

DMFT

≤6 (n = 608)

4.44 ± 3.29

4.47 ± 4.41

3.47 ± 5.38

2.52 ± 4.14

14.91 ± 13.77

> 6 (n = 81)

5.36 ± 3.44

5.51 ± 4.88

5.12 ± 6.39

4.16 ± 7.28

20.15 ± 18.67

Sig.

0.020

0.051

0.012

0.003

0.002