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G170 POPULATION ATTRIBUTABLE RISK FOR ADVERSE BIRTH OUTCOMES DUE TO MATERNAL SMOKING DURING PREGNANCY
A. Delpisheh1, Y. Kelly2, S. Rizwan1, E. Attia1, B. Brabin1.1The University of Liverpool, Liverpool, UK; 2The University College, London, UK
Objective: To estimate the population proportion of low birthweight, preterm births, and fetal growth restriction, which can be prevented with smoking avoidance during pregnancy.
Methods: An analysis of community and hospital based cross sectional studies undertaken in Merseyside covering the period 1983–2003.
Results: Maternal smoking status and pregnancy outcomes were available for a sample of 12 771 women. The proportion of women smoking during pregnancy has decreased from 37% in 1983 to 28.8% in 2003 (p<0.001). Smoking during pregnancy was a highly significant risk factor for both low birthweight (RR 2.1; 95% CI 1.9 to 2.4) and preterm birth (RR 1.5; 95% CI 1.3 to 1.7). The population attributable risk (PAR) for low birthweight due to maternal smoking ranged from 12.9% (95% CI 12.1 to 13.9) in 1983 to a peak of 40.9% (95% CI 40.5 to 41.3) in 1999 (mean 28.1%). For preterm birth, the PAR ranged from a low of 10% (95% CI 9.7 to 10.4) in 1983 to a peak of 25.7 % (95% CI 25.5 to 26.0) in 1999 (mean 15.1%). For fetal growth restriction, the minimum was 4.2% (95% CI 4.0 to 4.4) in 1988 to maximum of 56.6% (95% CI 56.1 to 57.1) 10 years later in 1998 (mean 22.0%).
Conclusions: Approximately 28.1% of low birthweight babies, 15.1% of preterm births, and 22.0% of cases of fetal growth restriction in Merseyside could be prevented if the risk of maternal smoking during pregnancy was removed.
G171 PAEDIATRIC TRAINING SCHEME WEBSITES
C. Dunkley1, M. Hesseling2.1Great Ormond Street Hospital, London, UK; 2Alder Hey Hospital, Liverpool, UK
Introduction: A survey was conducted in …