Time to onset of asthma
When evaluating time to onset of asthma in patients with no asthma at inclusion, conflicting results were shown. For grass pollen SLIT tablets the time to onset of asthma was significantly longer compared to the control group during the 6-years follow-up period (21) while the risk was significantly increased (hazard ratio (HR): 1.22 (1.12 – 1.32); p< 0.001) for the AIT group in another study (25). The authors assumed that a higher frequency of specialist visits in the AIT group led to more ICD10 coding for asthma. For details see tables S5 and S8 in supplementary information.