Evidence map›Paper›PMID 17116120›Full record

ArticleHealth services research2006

Effect of dialysis center profit-status on patient survival: a comparison of risk-adjustment and instrumental variable approaches.

John M Brooks, Christopher P Irwin, Lawrence G Hunsicker, Michael J Flanigan, Elizabeth A Chrischilles, Jane F Pendergast

Abstract readComparative Study
In one paragraph

Article in Health services research, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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.

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3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

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  14. Comparison of hospitalization rates among for-profit and nonprofit dialysis facilities.Clinical journal of the American Society of Nephrology : CJASN · 2014
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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

6 authors.

John M BrooksCollege of Pharmacy, University of Iowa, Program in Pharmaceutical Socioeconomics, Iowa City, IA 52242, USA.
Christopher P Irwin
Lawrence G Hunsicker
Michael J Flanigan
Elizabeth A Chrischilles
Jane F Pendergast

Funding

US RENAL DATA SYSTEM - SPECIAL STUDIES - ECONOMICSN01DK002401 · NIDDK · UNIVERSITY OF IOWA · PI HUNSICKER, LAWRENCE G. · 2000 to 2000
$201k
NIDDK NIH HHS DK02401NLM NIH HHS N01 DK002401
6 · The paper itself

Abstract

objectiveTo compare the estimated effects of dialysis center profit status on patient survival using alternative estimation strategies with retrospective data. DATA SOURCES/STUDY

settingPatient and provider-level retrospective data from the United States Renal Data System (USRDS), 1996-1999. STUDY

designObservational risk adjustment and instrumental variable methods. DATA COLLECTION/EXTRACTION

methodsStudy collected measures from various USRDS files describing clinical characteristics, survival, and the profit status of the initial dialysis center for incident end-stage renal disease (ESRD) patients aged 67+. USRDS facility files were used to assess dialysis center profit status and measure patient distances to dialysis centers. PRINCIPAL

findingsFound survival effect related to profit status in the range of previous research using risk-adjusting covariates similar to those used in previous models. Adding further risk-adjusting covariates halved this effect. The relative proximity of for-profit and nonprofit dialysis centers to the patient residence was the strongest determinant of the profit status of the patient's initial dialysis center. The effect of profit status on survival was eliminated using the two-stage least squares variant of instrumental variable estimation with the relative proximity of for-profit and nonprofit dialysis centers to the patient's residence as the instrument.

conclusionsUsing only the variation in initial dialysis center profit status that was related to the relative proximity of for-profit and nonprofit dialysis centers to the patient, we found no relationship between dialysis center profit status and patient survival. These results are in contrast to results obtained using risk-adjustment methods with a limited set of risk-adjusting covariates.

Indexed as

AgedAged, 80 and overAmbulatory Care FacilitiesFemaleHealth Services ResearchHumansLeast-Squares AnalysisMaleOutcome Assessment, Health CareRenal DialysisRetrospective StudiesRisk AdjustmentSurvival AnalysisUnited States

Identifiers

PMID17116120
PMCPMC1955309

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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.