Factors associated with unintended pregnancy in Brazil: cross-sectional results from the Birth in Brazil National Survey, 2011/2012

Table 1 Intendedness of births by sociodemographic, individual and obstetric history variables. Birth in Brazil, 2011/2012

Variable	Total		Intended	Mistimed	Unwanted
	N	%	%	%	%
Sociodemographic variables
Maternal age (years)
< 20	4571	19.1	34.7	33.5	31.8
20 to 34	16807	70.4	46.2	25.3	28.6
35 and over	2509	10.5	52.0	12.8	35.2
Schooling level
≤ 7 years	6017	26.6	39.6	21.4	39.1
8 to 11 years	12537	25.6	44.6	26.5	28.9
12 or more years	5472	39.0	59.3	24.8	16.0
Skin color
White	8701	36.2	52.7	23.8	23.5
Black	1879	7.8	40.8	23.1	36.1
Brown	13191	54.9	43.7	25.6	30.7
Yellow	265	1.1	41.3	29.9	28.8
Individual variables
Marital status
With partner	19440	81.4	49.5	25.0	25.5
Without partner	4432	18.6	22.9	28.0	49.1
Has paid work
No	14272	59.7	40.5	26.6	32.8
Yes	9616	40.3	50.5	23.9	25.6
Alcohol use
No	20070	86.0	46.2	25.5	28.3
Yes, but with no alcoholism risk	922	4.0	43.1	24.8	32.2
Yes, with alcoholism risk	2340	10.0	34.3	26.4	39.3
Tobacco use
No	21579	90.4	45.7	26.2	28.1
Yes	2296	9.6	33.7	19.5	46.8
Parity
Primiparous	9910	41.5	51.5	29.4	19.1
1	6697	28.0	46.6	26.0	27.5
2	3702	15.5	33.0	19.1	47.9
3 or more	3575	15.0	22.5	14.9	62.6
Adverse obstetric outcomes in previous pregnancy^a
Neonatal death
No	12254	96.6	38.1	22.2	39.7
Yes	432	3.4	50.3	17.8	31.9
Stillbirth
No	12129	95.6	35.7	16.6	32.7
Yes	558	4.4	41.3	20.5	38.3
Preterm birth (GA < 37 weeks)
No	11176	88.1	39.2	22.4	38.4
Yes	1510	11.9	33.2	19.9	46.9
Low birth weight (BW < 2500 g)
No	11039	87.0	39.1	22.6	38.4
Yes	1648	13.0	34.5	19.0	46.5
Maternal complications^b
No	10774	86.3	38.7	22.5	38.8
Yes	1717	13.7	36.2	19.8	44.0

GA gestational age, BW birth weight
^aExcluding primiparous women
^bComplications in previous pregnancy (eclampsia, high blood pressure, uterine rupture or diabetes)

ISSN: 1742-4755