1. Changes in Smoking During Pregnancy in Ontario, 1995 to 2010: Results From the Canadian Community Health Survey 
Hilary K. Brown, MSc, Piotr Wilk, PhD 
Journal of Obstetrics and Gynaecology Canada  
Volume 36, Issue 10, Pages (October 2014)
DOI: /S (15)
Copyright © 2014 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

2. Figure 1
Changes in smoking behaviour across time in pregnant women, non-pregnant women, and men, Ontario, 2001 to 2010
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (15) )
Copyright © 2014 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

3. Figure 2
Changes in smoking behaviour across time in pregnant women by maternal age, Ontario, 1995 to 2010
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (15) )
Copyright © 2014 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

4. Figure 3
Changes in smoking behaviour across time in pregnant women by maternal marital status, Ontario, 1995 to 2010
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (15) )
Copyright © 2014 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions

5. Figure 4
Changes in smoking behaviour across time in pregnant women by maternal education, Ontario, 1995 to 2010
Journal of Obstetrics and Gynaecology Canada   , DOI: ( /S (15) )
Copyright © 2014 Society of Obstetricians and Gynaecologists of Canada Terms and Conditions