Figure 2. Temporal trends in optimal, and suboptimal antenatal corticosteroid (ACS) prophylaxis, Nova Scotia, Canada 2007 to 2020. Data points represent 2-year moving averages
Optimal ACS: live births delivered between 24 and 34 weeks’ gestation whose mothers received ACS between 24 hours to 7 days before delivery expressed as a proportion of all live births delivered between 24 to 34 weeks’ gestation. Suboptimal ACS: live births delivered between 24 and 34 weeks’ gestation whose mothers received ACS <24 hours or >7 days before delivery expressed as a proportion of all live births delivered between 24 to 34 weeks’ gestation.