Impact of removable dentures on oral health-related quality of life among elderly adults in Taiwan

Yen, Yea-Yin; Lee, Huey-Er; Wu, Yi-Min; Lan, Shou-Jen; Wang, Wen-Chen; Du, Je-Kang; Huang, Shun-Te; Hsu, Kun-Jung

doi:10.1186/1472-6831-15-1

BMC Oral Health

Table 5 Hierarchical multiple regression analysis of GOHAI-T scores

From: Impact of removable dentures on oral health-related quality of life among elderly adults in Taiwan

Block and variables	Model I			Model II			Model III			Model IV
Block and variables	B	β	t	B	β	t	B	β	t	B	β	t
Socio-demographic characteristics
Age	0.03	0.02	0.31	0.10	0.08	1.28	0.07	0.05	1.11	0.06	0.04	0.94
Gender
Female vs. male	0.01	0.00	0.01	0.01	0.00	0.01	0.52	0.03	0.67	0.71	0.04	0.90
Education level
Lower than high school vs. high school or above	1.51	0.09	1.33	2.56	0.15	2.29^*	1.93	0.11	2.32^*	1.92	0.11	2.28^*
Living alone
Yes vs. no	2.53	0.12	1.98^*	2.26	0.11	1.82	1.73	0.08	1.87	1.55	0.07	1.66
Able to afford living expenses
No vs. yes	−2.60	−0.13	−2.13^*	−2.27	−0.11	−1.92	−1.26	−0.06	−1.43	−1.39	−0.07	−1.55
Dentition and denture status
Remaining natural teeth				0.41	0.36	3.72^**	0.24	0.21	2.87^**	0.29	0.26	3.34^**
Denture status
Single CD vs. CD				−5.07	−0.27	−3.47^**	−2.54	−0.14	−2.28^*	−2.24	−0.12	−1.94
Single RPD vs. CD				−3.47	−0.18	−2.17^*	−3.18	−0.17	−2.60^*	−3.07	−0.16	−2.47^*
Full-mouth RPD vs. CD				−4.43	−0.24	−2.04	−2.59	−0.14	−1.57	−2.52	−0.13	−1.52
Factors related to denture wearing
Presence of oral pain (always/often)
Yes vs. no							−1.28	−0.04	−0.89	−1.56	−0.05	−1.07
Perceived loose denture (always/often)
Yes vs. no							−3.12	−0.15	−2.84^**	−3.50	−0.17	−3.15^**
Presence of oral ulcer (always/often)
Yes vs. no							−4.83	−0.18	−3.46^**	−4.23	−0.16	−2.97^**
Perceived halitosis (always/often)
Yes vs. no							−1.74	−0.06	−1.23	−1.90	−0.06	−1.35
Perceived dry mouth (always/often)
Yes vs. no							−1.88	−0.08	−1.61	−2.00	−0.08	−1.71
Total denture satisfaction scores							0.77	0.44	8.79^**	0.79	0.45	8.85^***
Dental care service usage
Regular dental checkups
No vs. yes										−1.77	−0.09	−1.86
Treatment during toothache
No vs. yes										1.52	0.06	1.16
Dental visits in the last year
No vs. yes										−0.18	−0.01	−0.22
R ²			0.035			0.124^***			0.524^***			0.533^***
Adjusted R²			0.018			0.094^***			0.496^***			0.500^***
F(df1, df2)			F(5,271) = 1.99			F(9,267) = 4.20			F(15,261) = 19.13			F(18,258) = 16.35
p			0.081			0.000			0.000			0.000
ΔR²			0.035			0.089^***			0.400^***			0.009
F change			F(5,271) = 1.99			F(4,267) = 6.75			F(6,261) = 36.50			F(3,258) = 1.68
p for F change			0.081			0.000			0.0000			0.172

Hierarchical multiple regression for the association between GOHAI-T scores and all block variables with VIF set at < 5 to avoid multicollinearity.
ΔR²: change inR²; statistical significance: ^*p < 0.05, ^**p < 0.01, ^***p < 0.001.
Model I: Block1 (socio-demographic variables).
Model II: Block1 (socio-demographic variables) + block 2 (dentition and denture status).
Model III: Block1 (socio-demographic variables) + block 2 (dentition and denture status) + block 3 (factors related to denture wearing).
Model IV: Block1 (socio-demographic variables) + block 2 (dentition and denture status) + block 3 (factors related to denture wearing) + block 4 (dental care service usage).

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ISSN: 1472-6831

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