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Characterizing Health Outcomes in Idiopathic Pulmonary Fibrosis using US Health Claims Data.


ABSTRACT:

Background

Idiopathic pulmonary fibrosis (IPF) is a life-threatening interstitial lung disease (ILD). Characterizing health outcomes of IPF patients is challenging due to disease rarity.

Objective

This study aimed to identify the burden of disease in patients newly diagnosed with IPF.

Methods

Patients with ?1 claim with an IPF diagnosis were identified from a United States healthcare insurer's database (2000-2013). Patients with other known causes of ILD or aged <40 years were excluded. Subgroups were compared based on the 2011 change in International Classification of Diseases, 9th Revision (ICD-9) definition of IPF and occurrence of IPF testing. The prevalence and incidence of preselected health conditions of clinical interest were estimated.

Results

Median age of newly diagnosed patients (n = 7,298) was 62 years (54.0% male). Restricting to patients with IPF diagnostic testing did not substantially affect cohort characteristics, nor did ICD-9 IPF coding change. Mean follow-up was 1.7 years; 16.8% of patients died; and a substantial proportion of patients were censored due to end of health plan enrollment (50.7%) and other causes of ILD (19.6%). The incidence of pulmonary hypertension, lung cancer, and claims-based algorithm proxy for acute respiratory worsening of unknown cause was 22.5, 17.6, and 12.6 per 1,000 person-years, respectively.

Conclusions

Patients with IPF had a high disease burden with a variety of health outcomes observed, including a high rate of mortality. Database censoring due to changes in enrollment or other ILD diagnoses limited follow-up. Altering cohort entry definitions, including IPF testing or ICD-9 IPF coding change, had little impact on cohort baseline characteristics.

SUBMITTER: Mortimer KM 

PROVIDER: S-EPMC7949201 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Characterizing Health Outcomes in Idiopathic Pulmonary Fibrosis using US Health Claims Data.

Mortimer Kathleen M KM   Bartels Dorothee B DB   Hartmann Nadine N   Capapey Jorge J   Yang Jing J   Gately Robert R   Enger Cheryl C  

Respiration; international review of thoracic diseases 20200124 2


<h4>Background</h4>Idiopathic pulmonary fibrosis (IPF) is a life-threatening interstitial lung disease (ILD). Characterizing health outcomes of IPF patients is challenging due to disease rarity.<h4>Objective</h4>This study aimed to identify the burden of disease in patients newly diagnosed with IPF.<h4>Methods</h4>Patients with ≥1 claim with an IPF diagnosis were identified from a United States healthcare insurer's database (2000-2013). Patients with other known causes of ILD or aged <40 years w  ...[more]

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