76.5% were managed with asthma treatment Step 1 or 2. Poor persistence to inhaled corticosteroids,
defined as a gap of up to 60 days between prescriptions, was common. In 45.0% of pregnancies, an increase in average
treatment step was observed whereas in 25.6% the treatment step decreased. Treatment intensity remained the same in
29.5% of pregnancies. Exacerbations occurred in 4.8% of pregnancies compared to 5.9% in the same season the year before
(p,0.001)