. 2012 Sep 2;17(5):1425–1435. doi: 10.1007/s00784-012-0822-1

Table 5.

Odds-ratios, p values, and 95 % confidence intervals (CI) of the multivariable logistic regression analysis for having chewing problems with combined soft and combined hard foods with dental status after reclassification to Class_F and Class_R, adjusted for the background variables OHIP-14CN total score, age, gender, place of residence, SES, and questionnaire administration format

Condition^a (level)	Soft foods						Hard foods
	In class_F			In class_R			In class_F			In class_R
	OR	P	95 % CI	OR	P	95 % CI	OR	P	95 % CI	OR	P	95 % CI
≥10 teeth in each jaw (II)	1.22	0.516	0.67–2.23	1.36	0.294	0.77–2.40	1.12	0.713	0.60–2.09	0.84	0.565	0.47–1.51
Anterior regions complete (III)	0.83	0.279	0.58–1.17	0.69	0.028	0.50–0.96	0.65	0.015	0.45–0.92	0.64	0.008	0.46–0.89
Premolar region ‘sufficient’ (IV)	0.60	0.017	0.39–0.91	0.50	<0.001	0.34–0.74	0.58	0.013	0.38–0.89	0.62	0.015	0.42–0.91
Molar region ‘sufficient’ (V)	0.38	<0.001	0.26–0.56	0.41	<0.001	0.29–0.59	0.32	<0.001	0.22–0.48	0.42	<0.001	0.29–0.60
Teeth replaced	1.29	0.071	0.98–1.70	1.96	<0.001	1.31–2.94	1.45	0.009	1.10–1.92	2.20	<0.001	1.45–3.33

AUC dental conditions	0.670			0.672			0.683			0.671
Percentage subjects correctly predicted by dental conditions only	63.7			65.1			64.4			64.3
AUC dental conditions plus background variables	0.804			0.806			0.813			0.806
Percentage subjects correctly predicted by dental conditions plus background variable	73.9			73.6			74.5			74.0

Bold figures indicate significant relationships

AUC area under curves

^aReference = condition not present