Table 2 . Relative frequencies of daily tooth brushing and dental flossing habits by gender groups .

Variable	Brush ≥ twice/day				Floss ≥ once/day				Both habits/day
	Number	%	ORa	P	Number	%	ORa	P	Number	%	ORa	P
Gender
Male	681	13.9	1.0	-	669	13.8	1.0	-	183	3.7	1.0	-
Female	1,683	26.5	2.2	0.000	1,251	19.9	1.6	0.000	483	7.7	2.3	0.000
Residential area
Rural	546	15.1	1.0	---	327	9.5	1.0	---	93	2.9	1.0	---
Urban	1,818	22.3	1.6	0.000	1,593	19.9	2.4	0.000	573	6.9	2.7	0.000
Age Group
06 - 14	179	14.3	1.0	-	121	9.4	1.0	-	35	2.7	1.0	-
15 - 24	562	23.0	1.9	0.000	409	17.8	2.1	0.000	149	6.0	2.4	0.000
25 - 34	603	25.0	2.2	0.000	532	21.6	2.8	0.000	197	7.9	3.3	0.000
35 - 44	333	20.5	1.7	0.000	347	20.9	2.7	0.000	115	6.9	2.9	0.000
45 - 54	269	16.0	1.2	0.050	244	14.2	1.7	0.000	87	4.6	1.9	0.003
55 - 64	323	14.6	1.0	0.638	213	10.3	1.1	0.375	65	3.4	1.3	0.229
65 - 70	95	10.5	0.7	0.052	54	7.3	0.8	0.189	18	2.0	0.8	0.443
Ethnicity Parsian
1,266	21.4	1.0	-	1,016	18.2	1.0	-	379	6.4	1.0	-
Azeri	394	16.5	0.7	0.000	431	17.3	0.9	0.139	110	4.6	0.7	0.001
Lur	177	17.5	0.8	0.022	147	16.9	0.8	0.149	55	5.8	0.8	0.170
Kurd	179	19.9	0.9	0.385	120	12.7	0.7	0.000	38	4.3	0.6	0.017
Balouch	94	21.0	1.0	0.827	40	10.6	0.5	0.004	14	4.8	0.7	0.373
Gilaki	135	29.6	1.5	0.000	81	17.6	0.9	0.618	40	9.0	1.3	0.147
Arab	63	24.2	1.1	0.549	25	9.1	0.4	0.001	10	3.8	0.6	0.112
Turkman	26	13.5	0.6	0.049	21	15.7	0.7	0.219	2	0.8	0.1	0.010
0ther	30	20.7	1.0	0.941	39	22.3	1.2	0.374	18	11.0	1.9	0.027
Employment status
Employee	225	29.8	1.0	-	255	31.2	1.0	0.000	104	14.0	1.0	-
Labor	84	25.8	0.5	0.008	57	13.7	0.2	0.000	22	8.2	0.2	0.000
Self-employed	223	15.0	0.3	0.000	241	16.5	0.3	0.000	58	4.4	0.2	0.000
Student/soldier	514	27.7	0.6	0.000	372	27.0	0.3	0.000	138	12.6	0.4	0.000
Homemaker	1,025	21.9	0.7	0.001	751	11.1	0.4	0.000	244	3.2	0.4	0.000
Retired	149	10.9	0.5	0.000	133	22.3	0.4	0.000	54	5.2	0.5	0.004
Unemployed	142	19.4	0.6	0.001	109	15.0	0.4	0.000	46	6.8	0.5	0.001

OR= Odds Ratio; P= P-value for OR

^aORs are crude and are not adjusted by any other variables.