Table 3 Associations between TMD-diagnoses and sex, age daytime clenching and grinding as well as parental income in 124 children with a TMD diagnosis in a general population in Jeddah, Saudi Arabia. Figures represent odds ratios (OR) and 95 % confidence interval (95 % CI)

 Male

1.0

1.0

1.0

1.0

1.0

 Female

1.3

0.9–2.1

1.5

0.9–2.5

0.9

0.4–2.3

1.0

0.2–3.4

1.2

0.6–2-8

 10–13 years

1.0

1.0

1.0

1.0

1.0

 14–18 years

1.2

0.8–1.9

1.1

0.6–1.8

1.3

0.6–3.8

0.3

0.1–1.4

2.7

1.2–6.3

Clenching

2.1

1.1–3.8

3.3

1.7–6.3

0.8

0.2–3.7

0.2

0.0–1.8

Grinding

1.3

0.4–4.6

0.9

0.2–4.1

9.0

2.1–38.0

8.8

2.3–33.6

Income

 Below average

1.0

1.0

1.0

1.0

1.0

 Average

1.2

0.7–2.0

1.0

0.5–1.8

0.4

0.1–1.3

2.3

0.5–10.3

2.4

0.9–6.2

 Above average

1.6

0.8–3.3

2.0

0.9–4.2

0.6

0.1–2.4

2.0

0.2–22.0

1.8

0.5–6.3