Table. Prevalence (%) of sexual initiation and use of contraceptives at the last sexual intercourse, according to sociodemographic variables. ERICA, Brazil, 2013-2014. (N = 74,589).

Sociodemographic variable	Initiated the sexual life		Used contraceptive method at the last sexual intercourse		Used male condom at the last sexual intercourse*		Used oral pill at last sexual intercourse*
	%	95%CI	%	95%CI	%	95%CI	%	95%CI
Sex
Male	33.5	31.8-35.2	80.3	78.7-81.9	70.9	68.7-73.1	5.8	4.9-6.9
Female	22.6	21.7-23.6	85.2	83.8-86.5	65.7	62.9-68.3	24.7	22.5-27.0
Age (years)
12	5.9	4.9-7.0	67.1	60.0-73.4	46.9	40.5-53.4	2.3	0.8-5.9
13	12.1	10.6-13.8	74.9	70.8-78.6	60.5	55.2-65.7	3.0	1.9-4.8
14	21.4	20.0-22.9	81.4	78.2-84.3	72.6	68.8-76.1	6.8	5.4-8.7
15	35.9	33.4-38.5	81.6	79.1-83.8	70.4	67.0-73.7	11.3	9.5-13.4
16	44.2	40.1-47.5	84.4	82.2-86.3	70.6	68.0-73.1	15.3	13.3-17.5
17	56.4	53.9-58.9	85.3	82.7-87.6	69.2	64.6-73.4	20.8	18.2-23.6
Type of school
Public	29.9	28.5-31.4	82.2	80.9-83.4	70.0	67.0-70.9	12.9	11.7-14.3
Private	19.4	15.1-24.5	82.9	79.3-85.9	67.7	61.2-73.6	16.8	13.9-20.0
Place of residence
Urban	28.4	27.2-29.6	82.3	81.1-83.4	68.7	66.7-70.6	13.7	12.5-14.9
Rural	19.8	11.3-32.4	81.6	74.6-87.1	74.7	70.4-78.6	3.8	1.5-9.2
Macro-region
North	33.9	32.3-35.4	79.8	78.4-81.1	69.4	67.6-71.2	6.6	5.8-7.6
Northeast	26.9	24.4-29.5	78.0	75.6-80.3	64.9	61.5-68.1	9.0	7.6-10.7
Midwest	29.3	26.8-32.0	83.1	80.9-85.0	71.2	67.8-74.4	12.9	10.9-15.1
Southeast	27.7	26.1-29.4	83.5	81.5-85.4	69.8	66.4-73.0	14.6	12.6-16.7
South	26.9	24.1-29.9	85.9	82.9-88.5	69.5	65.3-73.4	22.6	19.0-26.8
Brazil	28.1	27.0-29.2	82.3	81.1-83.4	68.8	66.9-70.7	13.4	12.2-14.6

* Considered only adolescents who had already started their sexual life.