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

From: Factors associated with unintended pregnancy in Brazil: cross-sectional results from the Birth in Brazil National Survey, 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 pregnancya
 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 complicationsb
  No 10774 86.3 38.7 22.5 38.8
  Yes 1717 13.7 36.2 19.8 44.0
  1. GA gestational age, BW birth weight
  2. aExcluding primiparous women
  3. bComplications in previous pregnancy (eclampsia, high blood pressure, uterine rupture or diabetes)