Evidence map›Paper›PMID 23765331›Full record

ArticleThe European journal of health economics : HEPAC : health economics in prevention and care2014

Evaluating change using patient-reported outcome measures in knee replacement: the complementary nature of the EQ-5D index and VAS scores.

Fang-Ju Lin, Jennifer Samp, Alexis Munoz, Pei Shieen Wong, A Simon Pickard

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In one paragraph

Article in The European journal of health economics : HEPAC : health economics in prevention and care, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 5% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Exploration of visual analogue scale versions with the EQ-HWB-9 to measure health, social care, and carer-related quality of life: a VASt landscape.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
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  4. Article
  5. Article
  6. Valuation of EQ-5D-5L health states from cancer patients' perspective: a feasibility study.The European journal of health economics : HEPAC : health economics in prevention and care · 2024
    Article
  7. Responsiveness of the SF-36 general health domain: observations from 14883 spine surgery procedures.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2022
    Article
  8. Article
  9. Patient expectations and satisfaction 6 and 12 months following total hip and knee replacement.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2020
    Article
  10. Comparing the validity and responsiveness of the EQ-5D-5L to the Oxford hip and knee scores and SF-12 in osteoarthritis patients 1 year following total joint replacement.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2018
    Article
  11. Article
  12. Observational
  13. Reliability and validity of the EQ-5D-5L compared to the EQ-5D-3L in patients with osteoarthritis referred for hip and knee replacement.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2015
    Article
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 at 1 institution in 1 country.

Fang-Ju LinCenter for Pharmacoepidemiology and Pharmacoeconomic Research, Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA.
Jennifer Samp
Alexis Munoz
Pei Shieen Wong
A Simon Pickard
University of Illinois Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUsing the UK National Health Service's Patient Reported Outcome Measures data, we examined the magnitude of changes and relationship among the EQ-5D index, EQ-5D Visual Analog Scale (EQ-VAS), and Oxford Knee Score (OKS) in patients undergoing knee replacement.

methodsPatients undergoing knee replacements in 2009-2011 completed the EQ-5D and OKS before and after surgery. Responsiveness was compared using the standardized response mean (SRM). Stratified analyses based on change scores in the OKS were utilized to investigate how changes in the outcome measures related to each other. Patients were grouped based on the preoperative OKS to examine the relationship of change in the EQ-5D index and EQ-VAS with respect to initial health status.

resultsFor the overall cohort (54,486 patients), mean change scores pre/post knee replacement were 0.30 for the EQ-5D index (SD 0.33; SRM = 0.90), 3.3 for the EQ-VAS (SD 21.0; SRM = 0.16), and 14.9 for the OKS (SD 9.9; SRM = 1.50). The OKS changed uniformly with the EQ-5D index, but less concordantly with the EQ-VAS in response to knee replacement surgery. Substantial functional improvement was needed before mean EQ-VAS change scores showed improvement. Patients with worse preoperative health status had greater improvement following surgery, but the improvement in the EQ-5D index did not necessarily translate into comparable improvement in self-perceived well-being measured by the EQ-VAS.

conclusionsOn average, patients self-rated their health systematically lower using the EQ-VAS compared to the EQ-5D index and OKS following knee replacement. The EQ-VAS captured information about how patients feel about their health pre-/post-surgical intervention that contrasted with more functional measures of health. Additional qualitative research is needed to better understand these differences.

Indexed as

Health StatusPatient Outcome AssessmentQuality of LifeAdultAgedAged, 80 and overArthroplasty, Replacement, KneeFemaleHumansMaleMiddle AgedPatient SatisfactionPsychometricsRetrospective StudiesSurveys and Questionnaires

Identifiers

PMID23765331
OpenAlexW2037112219

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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.