Association of allergic asthma emergency room visits with the main biological and chemical air pollutants

► Pollutants affect asthma ER visits stronger in adult males than in adult females for the pollen season of Ambrosia. ► Asthma ER visits are more frequent in adult females, than in adult males for the season of total pollen excluding Ambrosia. ► Asthma ER cases are notably sparser in all the elderly than in all adults for the season of total pollen excluding Ambrosia. ► Based on all three seasons, asthma ER visits are notably more frequent in total female patients than in total male subjects. ► Correct decisions on ER visit-no ER visit events are lowest for the season of total pollen excluding Ambrosia.