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Public Health/Global Health

Poster Session 4

(1089) Smoking During Pregnancy in an Irish Obstetric Population: Prevalence, Maternal and Ethnic Factors

Wednesday, February 14, 2024
1:00 PM – 2:30 PM  
Location: Prince George's Exhibit Hall CDE, Lower Atrium Level
Objective:

Maternal smoking during pregnancy is associated with fetal and maternal adverse outcomes. It has been reported that the prevalence of smoking during pregnancy in Ireland is one of the highest worldwide. While the prevalence of smoking during pregnancy in the USA has dropped in recent years, there are no recent data relevant to an Irish obstetric population. The aims of this study were: 1. To evaluate the prevalence of maternal smoking in Ireland during 2015-2022;  2. To investigate the maternal and ethnic factors associated with smoking.

Study Design:

The data were obtained from the Euroking Obstetric Database at Galway University Hospital. Data was entered prospectively for women booked at the hospital during 2015-2022. Maternal smoking was recorded at antenatal booking in the first trimester. Descriptive statistics were calculated and prevalence rates were compared using Chi2 for proportions and trend.

Results:

The total number of pregnancies was 19,247. There was a stepwise reduction in the prevalence of smoking from 8.3% in 2015 to 6.0% in 2022 (P< 0.001). Smoking rates were 25.9% ≤20yrs, 13.3% aged 21-30 years, 4.2% aged 31-40 years, and 3.1% ≥41 years, with a significant downward trend with maternal age (P< 0.001). The greatest reduction in smoking was observed among those aged 21-30yrs, from 15.3% to 10.1% (P< 0.001). Increasing parity was associated with a higher prevalence of smoking as follows: PO 5.8%, PI 5.7% and P >1 10.8% (P< 0.001). The ethnic breakdown of smokers was: white Irish 69.1%, other white background 19.4%, white traveller 9.5%, and 2% for all other ethnic groups. Initiation of breastfeeding rates were 32.0% for smokers and 70.1% among non-smokers (P< 0.001).

 

Conclusion:

These findings outline a reduction in maternal smoking during pregnancy in Ireland over the past decade, particularly in the 21-30 year age group. Maternal smoking during pregnancy is associated with younger age, higher parity, white race and lower breast feeding initiation rates. These data provide information for strategies aimed at prevention of smoking during pregnancy.