Table 4.

Stratified analysis by age and breast cancer, Rondonópolis-MT, November 2017 to April 2018.

Variables	Cases		Controls		OR	CI		p Value
	n	%	n	%		Lower Limit	Upper Limit
Age range up to 49 years old
Menarch from 9 to 12 years old	13	50	61	52.59	0.90	0.38	2.11	0.81
Menarch 13 years old and above	13	19.12	55	80.88	1.00	-	-	-
Age range 50 years old and above
Menarch from 9 to 12 years old	38	64.41	71	47.97	1.96	1.05	3.65	0.03
Menarch 13 years old and above	21	35.59	77	78.57	1.00	-	-	-