Evidence map›Paper›PMID 7721583›Full record

ArticleHealth services research1995

Geographic variation in rates of selected surgical procedures within Los Angeles County.

D M Carlisle, R B Valdez, M F Shapiro, R H Brook

Open access · greenAbstract read
In one paragraph

Article in Health services research, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
16.9field-weighted citation impact, top 1% of its field
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

23 citing papers in PubMed, 78 citations in OpenAlex.

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  10. Does universal comprehensive insurance encourage unnecessary use? Evidence from Manitoba says "no".CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2004
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  12. Hysterectomy and socioeconomic position in Rome, Italy.Journal of epidemiology and community health · 2002
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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

4 authors at 1 institution in 1 country.

D M CarlisleDivision of General Internal Medicine and Health Services Research, UCLA School of Medicine 90024-1736, USA.
R B Valdez
M F Shapiro
R H Brook
UCLA Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe explore the contribution of income and ethnicity to geographic variation in utilization of surgical procedures. DATA SOURCES/STUDY

settingWe assessed the use of eight procedures from 1986 through 1988 among residents of Los Angeles County using data from the California Discharge Dataset, the 1980 census, and other secondary sources. Procedures chosen for evaluation were coronary artery bypass grafting (CABG), coronary artery angioplasty, permanent pacemaker insertion, mastectomy, simple hysterectomy, transurethral prostate resection (TURP), carotid endarterectomy, and appendectomy. STUDY

designThe amount of inter-zip code variation for each procedure was first measured using various estimates including the analysis of variance coefficient of variation (CVA). Population-weighted multivariate regression analysis was used to model variation in age- and gender-adjusted rates of procedure use among 236 residential zip codes. PRINCIPAL

findingsHighest-variation procedures were coronary artery angioplasty (CVA = .392) and carotid endarterectomy (CVA = .374). The procedures with the lowest degree of variation were cardiac pacemaker implantation (CVA = .194) and hysterectomy (CVA = .195). Variation was significantly related to income (carotid endarterectomy) and either African American or Latino zip code ethnicity for all procedures except pacemaker implantation. For all procedures except appendectomy, the direction of the effect was toward fewer procedures with lower income. However, the effect of African American or Latino population ethnicity varied.

conclusionsIn this large urban area both population ethnicity and socioeconomic status are significantly associated with the geographic utilization of selected surgical procedures.

Indexed as

Age FactorsEthnicityFemaleGeographyHumansIncomeLos AngelesMalePractice Patterns, Physicians'Regression AnalysisRetrospective StudiesSmall-Area AnalysisSocioeconomic FactorsSurgical Procedures, OperativeUrban HealthUrban Population

Identifiers

PMID7721583
PMCPMC1070349
OpenAlexW31605554

What OpenQuestion holds

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Read underepoch 390

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.