Table 4 Comparison the total score and the four domains of CPQ8–10 according to MIH-TNI grades (Mann–Whitney U test)

From: Oral health-related quality of life in Egyptian children with Molar Incisor Hypomineralisation. An observational study

CPQ8-10 scores

Groups

Mean

Std. dev

Median

95% Confidence interval for mean

Min

Max

P value

Lower bound

Upper bound

Oral symptoms

MIH-TNI 1

9.20

1.92

9.00

6.81

11.58

7.00

12.00

0.120 ns

MIH-TNI 2

9.17

3.65

9.00

7.59

10.75

4.00

18.00

 

MIH-TNI 3

11.00

4.54

12.00

3.76

18.23

5.00

15.00

 

MIH-TNI 4

11.47

3.35

12.00

9.85

13.09

4.00

16.00

 

Functional limitations

MIH-TNI 1

6.40

2.07

7.00

3.82

8.97

3.00

8.00

0.383 ns

MIH-TNI 2

6.04

4.23

5.00

4.21

7.87

0.00

16.00

 

MIH-TNI 3

5.75

4.27

7.00

–1.04

12.54

0.00

9.00

 

MIH-TNI 4

7.73

3.38

8.00

6.10

9.36

0.00

13.00

 

Emotional well-being

MIH-TNI 1

2.20

1.48

2.00

0.35

4.04

0.00

4.00

0.058 ns

MIH-TNI 2

3.21

3.14

3.00

1.85

4.57

0.00

9.00

 

MIH-TNI 3

3.25

2.50

3.50

–0.72

7.22

0.00

6.00

 

MIH-TNI 4

7.73

6.49

8.00

4.60

10.86

0.00

20.00

 

Social well-being

MIH-TNI 1

2.80b

2.58

2.00

–0.41

6.01

0.00

7.00

0.002*

MIH-TNI 2

1.21b

1.75

0.00

0.45

1.97

0.00

5.00

 

MIH-TNI 3

3.00b

3.46

2.00

–2.51

8.51

0.00

8.00

 

MIH-TNI 4

5.21a

4.26

5.00

3.15

7.26

0.00

18.00

 

CPQ

MIH-TNI 1

(n = 7)

20.60b

3.64

22.00

16.07

25.12

15.00

24.00

0.011*

MIH-TNI 2

(n = 21)

19.65b

8.09

18.00

16.15

23.15

6.00

33.00

 

MIH-TNI 3

(n = 7)

23.00b

9.96

21.50

7.14

38.85

13.00

36.00

 

MIH-TNI 4

(n = 17)

32.15a

13.90

35.00

25.45

38.85

7.00

55.00

 
  1. Significance level p ≤ 0.05, *significant, ns non-significant
  2. Within the same comparison, values with the same superscript letter are not significantly different