Variable | Mistimed (a) | Unwanted (a) | ||
---|---|---|---|---|
OR | 95Â % CI | OR | 95Â % CI | |
Sociodemographic variables | ||||
 Maternal age (years) | ||||
   < 20 | 1.76 | 1.57–1.98 | 1.48 | 1.32–1.67 |
  35 and over | 0.45 | 0.39–0.52 | 1.09 | 0.97–1.24 |
  20 to 34 | 1 | - | 1 | - |
 Schooling level | ||||
   ≤ 7 years | 1.21 | 1.05–1.39 | 3.37 | 2.94–3.88 |
  8 to 11 years | 1.32 | 1.16–1.50 | 2.29 | 2.01–2.62 |
  12 or more years | 1 |  | 1 |  |
 Skin color | ||||
  White | 1 | - | 1 | - |
  Black | 1.19 | 1.00–1.42 | 1.75 | 1.49–2.06 |
  Brown | 1.26 | 1.15–1.40 | 1.49 | 1.35–1.65 |
  Yellow | 1.66 | 1.14–2.42 | 1.67 | 1.18–2.32 |
Individual variables | ||||
 Marital status | ||||
  With partner | 1 | - | 1 | - |
  Without partner | 2.42 | 2.04–2.87 | 4.17 | 3.59–4.85 |
 Has paid work | ||||
  Yes | 1 | - | 1 | - |
  No | 1.39 | 1.26–1.53 | 1.60 | 1.46–1.75 |
 Alcohol use | ||||
  No | 1 | - | 1 | - |
  Yes, but with no alcoholism risk | 1.04 | 0.83–1.31 | 1.22 | 0.98–1.52 |
  Yes, with alcoholism risk | 1.40 | 1.17–1.67 | 1.87 | 1.64–2.14 |
 Tobacco use | ||||
  No | 1 | - | 1 | - |
  Yes | 1.01 | 0.86–1.18 | 2.26 | 1.98–2.57 |
 Parity | ||||
  Primiparous | 1 | - | 1 | - |
  1 | 0.97 | 0.87–1.09 | 1.59 | 1.41–1.80 |
  2 | 1.02 | 0.88–1.16 | 3.92 | 3.34–4.60 |
  3 or more | 1.16 | 0.96–1.40 | 7.51 | 6.35–8.88 |
Adverse obstetric outcomes in previous pregnancyb | ||||
 Neonatal death | ||||
  No | 1 |  | 1 |  |
  Yes | 0.61 | 0.46–0.81 | 0.61 | 0.48–0.76 |
 Stillbirth | ||||
  No | 1 |  | 1 |  |
  Yes | 0.86 | 0.63–1.16 | 0.90 | 0.69–1.17 |
 Preterm birth (GA < 37 weeks) | ||||
  No | 1 |  | 1 |  |
  Yes | 1.05 | 0.80–1.29 | 1.44 | 1.23–1.69 |
 Low birth weight (BW < 2500 g) | ||||
  No | 1 |  | 1 |  |
  Yes | 0.95 | 0.80–1.14 | 1.37 | 1.18–1.59 |
 Maternal complicationsb | ||||
  No | 1 |  | 1 |  |
  Yes | 0.95 | 0.81–1.12 | 1.22 | 1.04–1.42 |