Evidence map›Paper›PMID 40355344›Full record

ArticleHealth services research2025

Hospital Mergers and Acquisitions From 2010 to 2019: Creating a Valid Public Use Database.

Hyesung Oh, Vincent Mor, Daeho Kim, Andrew Foster, Momotazur Rahman

Abstract read
In one paragraph

Article in Health services research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Hyesung OhDepartment of Health Services, Policy & Practice, Brown University School of Public Health, Providence, Rhode Island, USA.ORCID https://orcid.org/0000-0001-8009-1421
Vincent MorDepartment of Health Services, Policy & Practice, Brown University School of Public Health, Providence, Rhode Island, USA.
Daeho KimDepartment of Health Services, Policy & Practice, Brown University School of Public Health, Providence, Rhode Island, USA.ORCID https://orcid.org/0000-0002-7732-6944
Andrew FosterDepartment of Economics, Brown University, Providence, Rhode Island, USA.
Momotazur RahmanDepartment of Health Services, Policy & Practice, Brown University School of Public Health, Providence, Rhode Island, USA.ORCID https://orcid.org/0000-0002-8592-3511

Funding

AHRQ HHS T32 HS000011Brown University and Agency for Healthcare Research and Quality 5T32HS000011-39
6 · The paper itself

Abstract

objectiveTo create, analyze, and distribute the Strategic Hospital Mergers & Acquisitions (M&A) Database, a detailed resource of hospital M&As from 2010 to 2019. STUDY SETTING AND

designWe conducted more than 2000 Internet searches to supplement, verify, and correct M&A identifications of American Hospital Association (AHA) survey data. We assessed the accuracy of the AHA survey and performed staggered difference-in-differences analyses to estimate the impact of measurement error on treatment effects capturing shifts in our measure of hospital market power. DATA SOURCES AND ANALYTIC SAMPLE: We analyzed 1537 M&A-related ownership changes from 2010 to 2019 from our analytic sample of 4896 unique acute care general hospitals or critical access hospitals derived from the AHA Annual Survey dataset. PRINCIPAL

findingsThe AHA survey dataset correctly identified the M&A deal completion year for only 40.1% of M&A-related ownership changes. The improved accuracy and granular treatment indicators of our database corrected for underestimations of the impact of hospital consolidation on hospital market power, yielding an effect estimate over 200% higher than the uncorrected data.

conclusionsBy reducing errors in hospital M&A identification, our database can enhance the quality of studies investigating the effects of hospital consolidation on healthcare access and health outcomes.

Indexed as

Databases, FactualHealth Facility MergerOwnershipAmerican Hospital AssociationHumansSurveys and QuestionnairesUnited Statesdatabasesdata qualityhospital mergersmarket powermeasurement error

Identifiers

PMID40355344
PMCPMC12461126

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.