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Table 6 Crude and adjusted or for preterm births a by period

From: Sociodemographic characteristics of mother’s population and risk of preterm birth in Chile

Period

1991-1995

1996-2000

2000-2008

ORb

 

OR

CI 95%

OR

CI 95%

Crude OR

Reference

1.07

[1.06, 1.08]

1.30

[1.28,1.31]

  

OR

CI 95%

OR

CI 95%

Ajusted OR

Reference

1.06

[1.05, 1.07]

1.26

[1.25,1.28]

  1. Chile, Singletons live births, 1991–2008.
  2. aPreterm births : < 37 weeks of gestational age.
  3. bAll crude and adjusted OR ( adjusted for age, parity and marital status) with P < 0.001 for Wald’s chi-square.
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Reproductive Health

ISSN: 1742-4755