Table 3 Multivariable block-wise complex sample linear regression models for OHIP-14 score among Australian adults

TMD (yes)

5.95

4.39–7.50

5.95

4.17

2.77–5.56

< .001

3.70

2.31–5.10

< .001

3.64

2.07–5.21

< .001

3.34

1.94–4.75

< .001

Moderate/severe periodontitis (yes)

–

–

–

0.98

0.06–1.90

.036

1.43

0.53–2.32

.002

1.45

0.55–2.34

< .001

1.38

0.52–2.23

.002

Teeth feel don’t fit properly together (yes)

–

–

–

4.75

3.80–5.70

< .001

4.59

3.66–5.52

< .001

4.29

3.36–5.22

< .001

3.57

2.67–4.47

< .001

No. of decayed teeth

–

–

–

1.17

0.72–1.62

< .001

1.16

0.70–1.61

< .001

1.03

0.51–1.54

< .001

0.95

0.46–1.43

< .001

No. of missing teeth

–

–

–

0.17

0.11–0.22

< .001

0.31

0.23–0.38

< .001

0.28

0.20–0.37

< .001

0.29

0.21–0.37

< .001

No. of filled teeth

–

–

–

0.07

0.02–0.13

.005

0.16

0.09–0.23

< .001

0.15

0.08–0.21

< .001

0.15

0.09–0.22

< .001

Sex (female)

–

–

–

–

–

–

0.93

0.11–1.75

.026

0.74

–0.13–1.62

.096

.41

–.47–1.29

.361

Age group

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

15–24 years

–

–

–

–

–

–

5.01

3.14–6.88

< .001

5.08

2.81–7.34

< .001

3.44

1.39–5.49

.001

25–34 years

–

–

–

–

–

–

4.54

2.92–6.16

< .001

4.74

2.99–6.49

< .001

3.37

1.75–4.99

< .001

35–44 years

–

–

–

–

–

–

4.44

3.20–5.69

< .001

4.71

3.32–6.11

< .001

3.35

2.04–4.66

< .001

45–54 years

–

–

–

–

–

–

3.58

2.50–4.65

< .001

4.04

2.73–5.35

< .001

2.73

1.52–3.95

< .001

55–64 years

–

–

–

–

–

–

2.30

1.23–3.37

< .001

2.62

1.42–3.81

< .001

1.82

0.69–2.94

.002

≥ 65 years

–

–

–

–

–

–

Ref.

–

–

Ref.

–

–

Ref.

–

–

Birth place (overseas)

–

–

–

–

–

–

1.50

0.60–2.39

.001

1.37

0.53–2.21

.002

1.50

0.67–2.32

< .001

Indigenous Australian (no)

–

–

–

–

–

–

–1.76

− 4.54–1.02

.214

− 1.48

− 4.93–1.96

.398

− 1.05

− 4.25–2.14

.517

Educational attainment

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

University qualification

–

–

–

–

–

–

–

–

–

− 0.55

− 1.39–0.28

.192

− 0.70

− 1.55–0.16

.110

Vocational education

–

–

–

–

–

–

–

–

–

0.28

− 0.66–1.22

.556

0.26

− 0.65–1.17

.574

Secondary school or less

–

–

–

–

–

–

–

–

–

Ref.

–

–

Ref.

–

–

Currently employed (yes)

–

–

–

–

–

–

–

–

–

0.27

− 0.69–1.23

.580

0.25

− 0.66–1.17

.587

Annual household income

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Less than $60 k

–

–

–

–

–

–

–

–

–

1.43

0.51–2.35

.002

1.32

0.45–2.19

.003

$60 k or more

–

–

–

–

–

–

–

–

–

Ref.

–

–

Ref.

–

–

Have private dental insurance (yes)

–

–

–

–

–

–

–

–

–

− 0.62

− 1.47–0.23

.150

− 0.61

− 1.37–0.16

.119

Diabetic (yes)

–

–

–

–

–

–

–

–

–

–

–

–

0.80

− 1.75–3.35

.538

Currently a smoker (yes)

–

–

–

–

–

–

–

–

–

–

–

–

− 0.33

− 1.56–0.91

.603

Alcohol consumption

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Days per week of alcohol drinking

–

–

–

–

–

–

–

–

–

–

–

− 0.04

− 0.20–0.12

.586

No. of standard drinks per day

–

–

–

–

–

–

–

–

–

–

–

–

0.11

− 0.07–0.29

.241

PSS-14 subscales

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Perceived distress

–

–

–

–

–

–

–

–

–

–

–

–

0.38

0.28–0.47

< .001

Perceived control

–

–

–

–

–

–

–

–

–

–

–

–

− 0.10

− 0.18–0.02

.012

Model R²

.054

R²_AB = .192, R²_A = .165

R²_AB = .222, R²_A = .201

R²_AB = ., R²_A = 

R²_AB = .296, R²_A = .281