Exacerbations and Real-World Outcomes Among Patients With Chronic Obstructive Pulmonary Disease Following Severe Exacerbation

Inclusion Criteria: * ≥ 1 prescription(s) fill for BGF on or following January 1, 2021 * Patients must have evidence of a severe qualifying exacerbation event. * The qualifying severe exacerbation event discharge date must occur within the 180-day period preceding the initiation of BGF for classification of patients into prompt or delayed initiators of BGF. * The discharge date of the first (earliest) observed qualifying index exacerbation event will be set as the index date * ≥ 12 months of continuous health plan enrollment preceding the qualifying index exacerbation event date (baseline period) * ≥ 1 day of continuous enrollment following the qualifying index exacerbation date * Age ≥ 40 years on the qualifying index exacerbation date Exclusion Criteria: * Presence of cancer diagnoses other than basal or squamous cell skin cancer during the baseline period preceding the index date or entire follow-up period * Presence of ≥2 claims with a diagnosis of interstitial fibrosis or sarcoidosis diagnoses during the period preceding the index date or entire follow-up period * Presence of SITT at any time during the entire available history of patients' data preceding the index date through BGF initiation