Table 2.

Percent distribution of descriptive variables (maternal socioeconomic conditions: number of previous live births, number of prenatal visits, teenage pregnancy, cesarean section, preterm newborns) in Brazilian state capitals, 1996–2013.

Year of birth	Maternal education	Number of primiparous mothers (%)	<6 antenatal visits (%)	Cesarean section (%)	Preterm birth (<37w) (%)	Teenage pregnancy (10–17 y.o.) (%)
1996	<8 years	*	57.8	28.0	5.6	10.1
	≥12 years	*	9.8	78.6	4.7
1997	<8 years	25.6	58.6	29.4	5.2	10.4
	≥12 years	40.5	9.2	78.2	4.9
1998	<8 years	29.3	61.9	28.1	6.8	10.3
	≥12 years	48.5	7.4	78.9	5.0
1999	<8 years	30.3	61.1	29.9	6.1	10.0
	≥12 years	46.5	19.7	68.2	5.3
2000	<8 years	28.2	58.5	29.6	6.0	9.8
	≥12 years	46.5	20.3	67.0	6.1
2001	<8 years	27.2	58.0	29.9	6.6	9.6
	≥12 years	47.2	18.0	68.5	6.0
2002	<8 years	24.3	56.8	29.7	6.7	9.4
	≥12 years	44.3	17.1	69.2	6.4
2003	<8 years	25.6	55.6	30.5	6.9	9.2
	≥12 years	48.1	15.1	70.8	6.9
2004	<8 years	26.4	55.3	32.3	6.9	8.8
	≥12 years	50.3	15.5	70.5	6.9
2005	<8 years	26.7	55.9	33.2	6.9	8.7
	≥12 years	50	15.3	72.5	6.9
2006	<8 years	28.4	55.0	33.5	6.8	8.5
	≥12 years	53.7	15.4	73.5	6.9
2007	<8 years	29.8	55.7	34.5	6.5	8.2
	≥12 years	54	14.7	74.8	7.0
2008	<8 years	31.1	55.0	35.4	7.0	8.1
	≥12 years	54.6	14.7	75.9	7.2
2009	<8 years	32.1	53.9	35.9	7.6	8.1
	≥12 years	56.1	14.5	77.6	7.1
2010	<8 years	32.2	54.6	37.4	7.2	7.9
	≥12 years	56.2	14.0	79.2	7.1
2011	<8 years	28.9	55.5	37.8	10.9	8.1
	≥12 years	57.5	14.1	82.3	9.1
2012	<8 years	28.6	54.6	37.4	13.0	8.0
	≥12 years	28.9	14.7	83.5	10.4
2013	<8 years	28.8	47.7	38.1	12.2	7.9
	≥12 years	58.2	14.7	83.0	9.6

*No data available.

(Source: MS/SVS/DASIS - Information System on Live Births).