Comparative study of the efficacy of biologics vs usual treatment on OCS reduction for severe asthma patients using health insurance claim database - HAYATE

Inclusion Criteria

• 1. Patients aged ≥16 years at index date.
• 2. Patients with records of receiving high dose ICS or high dose ICS/LABA and diagnosed as asthma (ICD-10 code: J45 or J46 ) during baseline period. High dose ICS and high dose ICS/LABA will be defined in the appendices (Table 6-9).
• 3. Patients who had visit histories at least one visit during baseline period, at least two visits during outcome period and at least one visit after outcome period.
• 4. Patients who had a total of 12 weeks of OCS prescribed during the baseline period including the index date.