WEUSRTP4850: Phase II: ICS/LABA Use in Pregnancy and Outcomes

Exclusion Criteria

• •patients not registered with a practice contributing up-to-standard data to the GPRD for the 6 months before the start of pregnancy, throughout pregnancy and for the 3 months following the pregnancy end date.
• •patients not 11-50 years of age on the pregnancy start date
• •patients who experienced multiple birth (twins, triplets)
• •patients with a medical code for a diagnosis of chronic obstructive pulmonary disease (COPD) or any other chronic respiratory condition (e.g. cystic fibrosis) recorded at anytime before the pregnancy end date