Methods

• This was a retrospective cohort study of patients with IPF who were hospitalized at 740 hospitals in the US.

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 ICD, International Classification of Diseases.

• The primary outcome was a composite of death during the index visit, lung transplant during the index visit but >1 day after admission, or death during a readmission (to the same hospital) within 90 days of the index visit.
• Secondary outcomes were length of stay during the index visit and readmission (to the same hospital) within 90 days of the index visit.