Citywide smoking ban contributes to significant decrease in maternal smoking, pre-term births

The study, which was presented November 10 at the American Public Health Association's 138th Annual Meeting & Exposition in Denver, compared maternal smoking prevalence in one Colorado city where a smoking ban has already been implemented to that of a neighboring city where there is no ordinance.

Researchers from the University of Colorado School of Pharmacy collected data from mothers residing in Pueblo, Colo., before and after a citywide smoking ban took effect. Results show a 23 percent decrease in the odds of preterm births and a 37 percent decrease in the odds of maternal smoking in Pueblo following the ban. Birth outcomes in El Paso County, Colo., however, showed no such drop during the same time period. Findings in this first-ever study in United States reflect similar findings as national data from Dublin, Ireland.

The study suggests that smoking bans have a significant and immediate positive impact on the health of infants and mothers. Pre-term babies stand a greater likelihood of experiencing cardiovascular issues later in life.

"This research proves that smoking is an irrefutable risk factor for expectant mothers who are acutely more affected," said Associate Professor Robert Page, PharmD, MSPH, at the University of Colorado Schools of Pharmacy and Medicine, and lead researcher on the study, who presented the findings. "The good news is that implementing strong tobacco control policy can protect even the most vulnerable from the deadly consequences of smoking."