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Table 1 Participants characteristics and complex sample bi-variate association with TMD experience

From: Temporomandibular dysfunction experience is associated with oral health-related quality of life: an Australian national study

Parameter

NSAOH participants (n = 4133)

TMD (yes)

% (95% CI of %)

% of total (95% CI)

9.9% (95% CI: 8.4–11.6))

Bi-variate association

 

OR

95% CI of OR

P value1

Age group

     

15–24 years

18.1 (15.4–21.2)

2.1 (1.2–3.7)

3.0

1.5–6.3

.003

25–34 years

19.1 (16.5–22.0)

2.4 (1.7–3.5)

3.4

1.9–6.0

< .001

35–44 years

19.7 (17.9–21.6)

2.2 (1.7–2.8)

2.9

1.8–4.7

< .001

45–54 years

17.6 (16.0–19.3)

1.6 (1.2–2.3)

2.4

1.4–4.1

.002

55–64 years

12.9 (11.6–14.3)

1.0 (0.7–1.3)

1.9

1.2–3.2

.008

≥ 65 years

12.5 (11.3–13.9)

0.5 (0.3–0.8)

Ref.

–

–

Sex (female)

50.0 (47.4–52.7)

6.4 (5.4–7.6)

2.0

1.3–3.0

.002

Educational attainment

     

University qualification

32.7 (30.0–35.6)

2.5 (1.9–3.2)

0.7

0.4–1.0

.062

Vocational education

27.0 (24.6–29.5)

3.2 (2.3–4.5)

1.1

0.7–1.8

.599

Secondary school or less

40.3 (37.6–43.1)

4.2 (3.2–5.5)

Ref.

–

–

Currently employed (yes)

65.1 (62.4–67.7)

6.1 (5.0–7.6)

0.9

0.6–1.2

.392

Annual housed income

     

Less than $60 k

53.1 (49.8–56.4)

5.5 (4.6–6.5)

1.3

0.9–1.9

.131

$60 k or more

46.9 (43.6–50.2)

3.7 (2.7–5.1)

Ref.

–

–

Birth place (overseas)

21.0 (18.9–23.2)

1.9 (1.4–2.7)

0.9

0.6–1.4

.680

Have private dental insurance (yes)

47.3 (44.4–50.2)

3.8 (3.0–4.9)

0.7

0.5–0.9

.018

Diabetic (yes)

4.3 (3.2–5.6)

0.4 (0.2–0.8)

1.0

0.5–2.0

.996

Indigenous Australian (no)

98.9 (98.3–99.4)

9.7 (8.3–11.4)

0.7

0.2–2.3

.568

Current smoker (yes)

15.0 (13.1–17.1)

2.4 (1.6–3.5)

2.0

(1.2–3.1)

.005

Moderate/severe periodontitis (yes)

21.4 (19.5–23.4)

1.8 (1.3–2.5)

0.8

0.6–1.3

.381

Teeth feel do not fit properly together (yes)

21.0 (18.6–23.5)

5.8 (4.6–7.5)

3.0

2.1–4.3

< .001

 

Mean (95% CI)

Mean (95% CI)

OR

95% CI of OR

P value1

No. of decayed teeth

0.6 (0.5–0.7)

1.0 (0.51.5)

1.2

1.0–1.3

.006

No. of missing teeth

5.7 (5.5–6.0)

5.4 (4.8–6.0)

0.99

0.96–1.01

.261

No. of filled teeth

7.9 (7.5–8.2)

7.5 (6.4–8.6)

0.99

0.96–1.02

.413

Alcohol consumption

     

Days per week of alcohol drinking

2.5 (2.4–2.6)

2.0 (1.6–2.4)

.89

.81–.99

.037

No. of standard drinks per day

2.4 (.1–2.3)

2.6 (2.0–3.2)

1.01

.94–1.11

.670

PSS-14 subscales

–

–

–

–

–

Perceived distress

12.1 (11.8–12.3)

14.2 (13.1–15.3)

1.10

1.05–1.16

< .001

Perceived control

17.6 (17.3–17.8)

16.3 (15.3–17.3)

.94

.90–.98

.003

  1. Analyses accounted for cluster and stratum used in NSAOH sampling strategy, as well as sampling weights to ensure representativeness of the estimates
  2. OR: odds ratio of bi-variate association, CI: confidence interval, OHIP-14: Oral Health Impact Profile (short form), PSS-14: the 14-item Perceived Stress Scale, Ref.: Reference category
  3. 1Bi-variate complex samples logistic regression model for TMD experience
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BMC Oral Health

ISSN: 1472-6831

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