Evidence map›Paper›PMID 17015592›Full record

ArticleThe Journal of bone and joint surgery. American volume2006

The influence of income and race on total knee arthroplasty in the United States.

Jonathan Skinner, Weiping Zhou, James Weinstein

Abstract read
In one paragraph

Article in The Journal of bone and joint surgery. American volume, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
–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

46 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Racial Variation in Total Knee Replacement in a Diverse Nationwide Clinical Trial.Journal of clinical rheumatology : practical reports on rheumatic & musculoskeletal diseases · 2018
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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

3 authors.

Jonathan SkinnerCenter for Evaluative Clinical Sciences, HB 7152 Dartmouth Medical School, Hanover, NH 03755, USA. jon.skinner@dartmouth.edu
Weiping Zhou
James Weinstein

Funding

UNDERSTANDING AND IMPROVING EPISODE-BASED HOSPITAL CAREP01AG019783 · NIA · DARTMOUTH COLLEGE · PI Alistair James O'MALLEY · 2001 to 2026
$52.9M
Prognostic Value of Lumbar Spine MRIP60AR048094 · NIAMS · DARTMOUTH COLLEGE · PI TOSTESON, TOR D. · 2003 to 2007
$6.2M
NIAMS NIH HHS P60 AR048094NIAMS NIH HHS P60-AR048094NIA NIH HHS P01 AG019783NIA NIH HHS P01-AG19783
6 · The paper itself

Abstract

backgroundThe associations among income, total knee arthroplasty, and underlying rates of knee osteoarthritis are not well understood. We studied whether high-income Medicare recipients are more likely to have a knee arthroplasty and less likely to suffer from knee osteoarthritis.

methodsTwo data sources were used: (1) the 2000 United States Medicare claims data measuring the incidence of total knee arthroplasty by race, ethnicity, zip (postal) code income, and region (n = 27.5 million) and (2) the National Health and Nutrition Examination Survey (NHANES III) for individuals with an age of sixty years or more (n = 1926) with radiographic and clinical evidence of osteoarthritis. Logistic regression methods were used to adjust for covariates.

resultsAt the national level, age-adjusted rates of total knee arthroplasty in the high-income quintile were no higher than those in the low-income group (odds ratio, 0.98; 95% confidence interval, 0.96 to 1.00). Within regions, access to care was better for high-income groups (odds ratio, 1.19; 95% confidence interval, 1.17 to 1.22). Racial disparities in arthroplasty were significant (p < 0.001); the odds ratio was 0.36 (95% confidence interval, 0.34 to 0.38) for black men and 0.45 (95% confidence interval, 0.41 to 0.49) for Asian women. There was no evidence of an income gradient for most clinical and radiographic measures of arthritis. The exception was a significant negative association between income and pain on passive motion (p < 0.05).

conclusionsHigh-income Medicare enrollees are no less likely to have osteoarthritis than low-income enrollees but have somewhat better access to care. Racial disparities are more important than those that are attributable to socioeconomic status.

Indexed as

IncomeAgedArthroplasty, Replacement, KneeEthnicityFemaleHealth Services AccessibilityHumansMaleMedicareNutrition SurveysOsteoarthritis, KneeSex DistributionUnited StatesWhite People

Identifiers

PMID17015592
PMCPMC2749956

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

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.