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Table 1 Characteristics of the 8 to 10-year-old group

From: Oral health-related quality of life in children and adolescents with osteogenesis imperfecta: cross-sectional study

Patients aged between 8 and 10

OI I

OI III

OI IV

Others

All

Sociodemographic Characteristics

 Enrolment number – n (%)

26 (46)

16 (29)

11 (20)

3 (5)

56 (100)

  Female

13 (50)

12 (75)

7 (64)

2 (66)

34 (61)

 Age – mean (SD)

9.3 (1.0)

9.2 (0.9)

9.8 (0.5)

9.6 (0.5)

9.4 (0.9)

 Race (White) – n (%)

22 (85)

13 (81)

5 (45) c

3 (100)

43 (77)

  others

4 (15)

3 (19)

6 (55) c

0 (0)

13 (23)

 Insurance status (Private) – n (%)

20 (77)

8 (50)

8 (73)

2 (67)

38 (68)

  Medicare/Medicaid

6 (23)

8 (50)

3 (27)

1 (33)

18 (32)

Pertinent Medical and Physical Conditions

 Family history (Yes) – n (%)

19 (73) a

2 (12)

3 (21) c

3 (100)

27 (48)

 Chronic pain in body (Yes) – n (%)

8 (31)

9 (56)

3 (27)

1 (33)

21 (37)

 Bisphosphonate (Yes) – n (%)

11 (42)

16 (100)

11 (100)

3 (100)

41 (73)

 Wheelchair use (Yes) – n (%)

1 (4) a

14 (88) b

4 (36) c

2 (67)

21 (38)

Oral condition

 DI (Yes) – n (%)

5 (19) a

11 (69)

6 (55) c

0 (0)

22 (39)

 Molar Malocclusion Classification – n (%)

  Cl I

11 (42)

3 (19)

1 (9)

0 (0)

15 (27)

  Cl III

11 (42)

12 (75)

7 (64)

2 (67)

32 (57)

  Cl II & mutilated

4 (16)

1 (6)

3 (27)

1 (33)

9 (16)

  1. Statistical tests determine the significant relationship between categorical variables and OI types I, III and IV: Chi-square test or the Fisher’s exact test for contingency tables with small cell counts; Compare means of a continuous variable between OI types I, III and IV: Welch’s t-test for independent samples. As the sample size is small in each group (n < 15), results have been confirmed by Mann-Whitney U test (non-parametric test)
  2. ap < 0.05 OI type I compared to OI type III
  3. bp < 0.05 OI type III compared to OI type IV
  4. cp < 0.05 OI type IV compared to OI type I