Table 2.

Bivariate analysis of socio-demographic factors and breast cancer, Rondonópolis-MT, November 2017 to April 2018.

Variable	Case		Control		OR	95% CI		p Value
	n	%	n	%		Lower Limit	Upper Limit
Age group
Up to 50 years old	59	69.41	149	56.02	1.78	1.05	3.00	0.02
50 years old and above	26	30.59	117	43.98	1.00
Race/color
White	20	23.53	89	33.46	1.63	0.93	2.86	0.08
Others	65	76.47	177	66.54	1.00	-	-	-
Marital status
Casada/stable union	41	48.24	95	35.71	1.67	1.02	2.7	0.03
Others	44	51.76	171	64.29	1.00	-	-	-
Level of education
Incomplete secondary school	21	26.92	99	39.29	0.93	0.36	2.48	0.89
Completed secondary school/6th form incomplete	31	39.74	62	24.60	2.21	0.87	5.59	0.09
Completed 6th form/incomplete university	19	24.36	60	23.81	1.40	0.53	3.69	0.49
Completed/post-grad	7	8.97	31	12.30	1.00
Family income
Over R$ 1.200/month	69	81.18	186	70.45	1.80	1.01	3.39	0.05
Up to R$ 1.200/month	16	18.82	78	29.55	1.00	-	-	-
Past alcohol consumption
Yes	39	45.88	123	46.24	0.98	0.60	1.60	0.95
No	46	54.12	143	53.76	1.00	-	-	-
Past smoker
Yes	18	21.18	74	26.21	0.69	0.38	1.25	0.22
No	67	78.82	192	72.18	1.00	-	-	-
BMI
Over 25	56	67.47	154	59.92	1.38	0.82	2.33	0.21
<18.5–25	27	32.53	103	40.08	1.00	-	-	-
Menarch
From 9 to 12 years old	51	60	132	50	1.50	0.91	2.46	0.10
13 years old and above	34	40	132	50	1.00	-	-	-
Breastfeeding
No	4	5.00	8	3.15	1.61	0.41	5.49	0.44
Yes	76	95.00	246	9685	1.00	-	-	-
Amount of time breastfeeding
Did not breastfeed/breastfed for less than 1 year	40	50.63	93	36.76	1.76		2.93	0.02
Breastfed more than 1 year	39	49.37	160	63.24	1.00	-	-	-
Use of contraceptive
Yes	67	78.82	194	73.93	1.38	0.76	2.48	0.27
No	18	21.18	72	27.07	1.00	-	-	-
Hormone Replacement Therapy for over 5 years
Yes	7	8.24	24	9.33	0.89	0.37	2.15	0.80
No	78	91.76	239	90.87	1.00	-	-	-