Table 3.

Association between difficulty chewing in men aged 20 to 59 years and independent variables. Florianopolis, SC, Southern Brazil, 2009. (N = 761)

Variable			Unadjusted analysis		Model 1a		Model 2b		Model 3c
			OR	95%CI	OR	95%CI	OR	95%CI	OR	95%CI
Demographic block
	Age (years)		p < 0.001		p < 0.001
		20 to 29	1		1
		30 to 39	2.3	1.2;4.4	2.4	1.3;4.5
		40 to 49	1.8	0.9;3.6	1.8	0.9;3.6
		50 to 59	3.5	1.9;6.3	3.4	1.9;5.9
	Self-reported skin color		p = 0.192		p = 0.440
		White	1		1
		Parda/Black	0.7	0.4;1.2	0.8	0.5;1.4
Socioeconomic block
	Per capita income terciles (reais)		p = 0.002				p = 0.083
		3rd tercile (highest income)	1				1
		2nd tercile	1.6	0.9;3.2			1.4	0.7;2.8
		1st tercile (lowest income)	2.5	1.4;4.6			2.0	0.9;2.1
	Schooling in years of study		p < 0.001				p = 0.017
		≥ 12	1				1
		9 to 11	1.4	0.8;2.6			1.2	0.7;2.1
		5 to 8	2.3	1.2;4.6			1.4	0.7;3.0
		≤ 4	4.7	2.5;8.9			2.4	1.1;5.2
Use of dental services block
	Most recent dental visit (years)		p = 0.100						p = 0.755
		< 1	1						1
		1 to 2	0.9	0.5;1.7					0.9	0.5;1.7
		3	1.8	1.1;3.1					1.2	0.6;2.3
	Type of service		p = 0.930
		Private	1							–
		Public	1.7	1.0;2.7						–
		Other	0.2	0.02;1.3						–
Bloco de condições bucais autorreferidas
	Wearing full dentures		p = 0.016						p = 0.147
		No	1						1
		Yes	2.6	1.2;5.4					0.5	0.2;1.4
		Number of natural teeth	p < 0.001						p < 0.001
		≥ 10 in both arches	1						1
		< 10 in at least one arch	4.6	2.8;7.6					3.9	2.1;7.1
		None	6.0	2.3;15.9					6.1	1.7;21.8
	Toothache		p = 0.002						p = 0.002
		No	1						1
		Yes	2.3	1.4;3.9					2.2	1.3;3.8
	Number of natural teeth x toothache								p < 0.001
									1.8	1.4;2.2

p < 0.20 and Multivariable Logistic Regression (odds ratio - 95%CI)

^aModel 1: block 1 variables adjusted for variables in the same block.

^bModel 2: block 2 variables adjusted for variables in the same block and for age.

^cModel 3: block 3 variables adjusted for variables in the same block and for age, income and schooling.

^dp > 0.20