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

Table 2 OHIP-14 domains and total scores among the Australians and associations with TMD experience status

OHIP-14 domains	Population estimate	Independent sample t-test for complex samples of OHIP-14 domains and total score by TMD experience status¹					Adjusted multivariate complex samples linear regression models for OHIP-14 domains and total score associations with TMD experience status^1,2,3
		TMD (Yes)	TMD (no)
	Mean (95% CI)	Mean (95% CI)	Mean (95% CI)	t	P value	B	SE	95% CI of B	P value	f²
1 Functional limitation	.57 (.51–.63)	1.05 (.86–1.24)	.52 (.46–.58)	5.24	< .001	.36	0.12	.13–.59	.002	0.001
2 Physical pain	2.09 (2.00–2.19)	3.16 (2.80–3.52)	1.98 (1.88–2.07)	6.37	< .001	.82	0.19	.45–1.20	< .001	0.022
3 Psychological discomfort	1.62 (1.51–1.72)	2.81 (2.48–3.15)	1.49 (1.38–1.60)	7.36	< 001	.68	0.19	.29–1.06	.001	0.012
4 Physical disability	.66 (.60–.72)	1.27 (1.01–1.53)	.60 (.54–.66)	4.97	< .001	.33	0.14	.06–.60	.016	0.007
5 Psychological disability	1.11 (1.04–1.19)	2.09 (1.79–2.39)	1.01 (.93–1.09)	6.92	< 001	.52	0.16	.20–.84	.001	0.012
6 Social disability	.55 (.49–.60)	1.11 (.85–1.36)	.48 (.43–.54)	4.81	< .001	.32	0.10	.12–.51	.002	0.008
7 Handicap	.51 (.45–.57)	1.00 (.77–1.23)	.46 (.40–.52)	4.51	< .001	.27	0.10	.07–.47	.009	0.007
OHIP-14 scores	7.12 (6.69–7.54)	12.48 (10.96–13.99)	6.53 (6.09–6.96)	7.51	< .001	3.34	0.72	1.94–4.75	< .001	0.022

¹Analyses accounted for cluster and stratum used in NSAOH sampling strategy, as well as sampling weights to ensure representativeness of the estimates
²Multivariate complex samples linear regression models for OHIP-14 domains and total score association with TMD experience status adjusted for oral health status (Moderate or severe periodontitis, number of decayed, missing and filled teeth, and whether teeth are not fit together properly), demographics (sex, age group, birthplace and Indigenous status), socioeconomics (educational attainment, current employment status, annual household income level and having private dental insurance) and health and health behaviours (diabetes status, perceived stress subscales, current smoking status. and alcohol consumption)
³The provided f² is for TMD association with OHIP-14 domains and total score using the equation presented in the methods section

ISSN: 1472-6831