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Decreasing smoking prevalence during pregnancy in Sweden: The effect on small-for-gestational-age births

Author

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  • Cnattingius, S.
  • Haglund, B.

Abstract

Objectives. This study examined whether recent changes in smoking prevalence among pregnant women have affected risks of small-for-gestational- age births. Methods. With data for all live single births in Sweden from 1983 through 1992 (n = 1 048 139), odds ratios [ORs] and attributable risks of small-for-gestational-age births were calculated for 1983 through 1985, 1986 through 1989, and 1990 through 1992. Results. Daily smoking decreased from 29.4% in 1983 to 21.8% in 1992. For the three time periods, the odds ratios of small-for-gestational-age births by maternal smoking were almost identical: 1-9 cigarettes/day OR = 2.1 or 2.2; for ≤10 cigarettes/day, OR = 2.8. The attributable risk of smoking for small-for-gestational-age births declined from 26.2% in 1983 through 1985 to 20.9% in 1990 through 1992. Conclusions. The findings point to a true decrease in tobacco exposure during pregnancy and a reduction in the attributable risk for small-for- gestational-age births.

Suggested Citation

  • Cnattingius, S. & Haglund, B., 1997. "Decreasing smoking prevalence during pregnancy in Sweden: The effect on small-for-gestational-age births," American Journal of Public Health, American Public Health Association, vol. 87(3), pages 410-413.
    • Handle: RePEc:aph:ajpbhl:1997:87:3:410-413_0
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