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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Lee, Elinor Ataya, Ali McCarthy, Cormac Godart, Erica Cosenza, John King, Alysse Robinson, Brian Wang, Tisha |
| Abstract | Introduction Pulmonary alveolar proteinosis (PAP) is a rare lung syndrome characterized by the accumulation of surfactant in the alveoli. Using a longitudinal claims database, we compared measures of clinical and economic burden between a sample of diagnosed PAP patients and non-PAP matched controls. Methods PAP patients were identified leveraging IPM.ai’s longitudinal U.S. claims database spanning January 1, 2009, through May 1, 2022. PAP patients were selected based on the presence of ICD-10: J84.01 or ICD-9: 516.0 in their claims history and were indexed for observation. An age, gender, and geographically matched control cohort was created (ratio of 1:4) for comparison. A third cohort, consisting of likely undiagnosed PAP patients, was identified using a machine learning model. The PAP and control cohorts were tracked longitudinally, depending on individual index dates, from January 1, 2018, through May 1, 2023. Inclusion criteria required evidence of continual claims activity 12 months prior to and after the index date, which reduced the total number of diagnosed PAP and control patients in the analysis. Demographics, comorbidities, procedures, medication use, annual healthcare resource utilization (HCRU), and costs were calculated for eligible PAP and control patients and were compared 12 months prior to, and 12 months after each patient’s index date. Results After inclusion criteria were applied, 2312 confirmed PAP patients and 9247 matched controls were included in the analysis. Compared with matched controls, PAP patients had significantly higher rates of diagnosed conditions at baseline as defined by the Charlson Comorbidity Index (CCI). During the follow-up period, PAP patients had higher rates of diagnosed conditions, procedures, medication use, and cost-of-care compared with controls. PAP patients also had higher rates of emergency room visits (35% vs. 14%; P < 0.001), outpatient visits (87% vs. 56%; P < 0.001), inpatient visits (20% vs. 5%; P < 0.001) and had longer lengths of stay for inpatient hospitalizations (2.8 days vs. 0.56 days; P < 0.001), respectively. Conclusion This study represents the largest dataset of PAP patients and matched controls to be analyzed to date. Findings indicate that PAP patients have higher rates of diagnosed conditions, procedures, medication use, HCRU, and costs compared with non-PAP patients. |
| Related Links | https://ojrd.biomedcentral.com/counter/pdf/10.1186/s13023-024-03478-2.pdf |
| Ending Page | 9 |
| Page Count | 9 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 17501172 |
| DOI | 10.1186/s13023-024-03478-2 |
| Journal | Orphanet Journal of Rare Diseases |
| Issue Number | 1 |
| Volume Number | 20 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2025-02-14 |
| Access Restriction | Open |
| Subject Keyword | Medicine Public Health Pharmacology Toxicology Human Genetics Burden of illness Charlson comorbidity index (CCI) Healthcare resource utilization (HCRU) Anti-GM-CSF antibody Whole-lung lavage Medicine/Public Health Pharmacology/Toxicology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology (medical) Genetics (clinical) |
| Journal Impact Factor | 3.4/2023 |
| 5-Year Journal Impact Factor | 3.9/2023 |
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