1. Risk of Preterm Birth According to Maternal and Paternal Country of Birth: A Population- Based Study 
Alison L. Park, MSc, Marcelo L. Urquia, PhD, Joel G. Ray, MD, MSc 
Journal of Obstetrics and Gynaecology Canada  
Volume 37, Issue 12, Pages (December 2015)
DOI: /S (16)
Copyright © 2015 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

2. Figure 1
Adjusted odds ratios for preterm birth<37 weeks (Figure 1A), late preterm birth from 34 to 36 weeks (Figure 1B), and very preterm birth<32 weeks (Figure 1C) for infants whose parents are both foreign-born from the same country versus infants whose parents are both Canadian-born (the referent). Odds ratios are adjusted for maternal age, paternal age, parity, marital status, income quintile, infant sex and twin pregnancy. Data “suppressed” for those with<5 very preterm births.
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (16) )
Copyright © 2015 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

3. Figure 1
Adjusted odds ratios for preterm birth<37 weeks (Figure 1A), late preterm birth from 34 to 36 weeks (Figure 1B), and very preterm birth<32 weeks (Figure 1C) for infants whose parents are both foreign-born from the same country versus infants whose parents are both Canadian-born (the referent). Odds ratios are adjusted for maternal age, paternal age, parity, marital status, income quintile, infant sex and twin pregnancy. Data “suppressed” for those with<5 very preterm births.
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (16) )
Copyright © 2015 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

4. Figure 1
Adjusted odds ratios for preterm birth<37 weeks (Figure 1A), late preterm birth from 34 to 36 weeks (Figure 1B), and very preterm birth<32 weeks (Figure 1C) for infants whose parents are both foreign-born from the same country versus infants whose parents are both Canadian-born (the referent). Odds ratios are adjusted for maternal age, paternal age, parity, marital status, income quintile, infant sex and twin pregnancy. Data “suppressed” for those with<5 very preterm births.
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (16) )
Copyright © 2015 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions