Table 6 Adjusted odds ratio of the negative impact (having higher grades) on the OHRQoL in adolescents

OI (Type I)

1

1

1

1

1

 Type III

4.6 (1.2–17.4) *

1.8 (0.5–6.6)

7.8 (1.9–31.7)*

3.6 (0.9–13.7)

0.9 (0.3–3.6)

 Type IV

2.6 (0.9–7.3)

1.7 (0.6–4.6)

3.7 (1.3–10.3) *

2.3 (0.8–6.6)

1.7 (0.7–4.7)

Age (years)

1.1 (0.8–1.6)

1.1 (0.8–1.6)

1.2 (0.8–1.6)

1.1 (0.7–1.6)

0.9 (0.6–1.3)

Gender (Male)

1

1

1

1

1

 Female

0.9 (0.4–2.5)

0.8 (0.3–2.1)

0.7 (0.3–1.9)

0.8 (0.3–2.1)

1.6 (0.7–3.9)

Race (White)

1

1

1

1

1

 Others

2.3 (0.6–8.3)

1.8 (0.6–6.3)

1.2 (0.4–4.2)

2.44 (0.7–8.9)

1.4 (0.4–4.5)

Family history (No)

1

1

1

1

1

 Yes

1.1 (0.4–2.6)

1.1 (0.4–2.9)

0.9 (0.4–2.6)

1.3 (0.5–3.4)

0.9 (0.3–2.2)