ArticleHealth and quality of life outcomes2008
Development of the knee quality of life (KQoL-26) 26-item questionnaire: data quality, reliability, validity and responsiveness.
Article in Health and quality of life outcomes, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Pooled it
- Intra-articular injection of photo-activated platelet-rich plasma in patients with knee osteoarthritis: a double-blind, randomized controlled pilot study.BMC musculoskeletal disorders · 2016Trial
- The effect of waiting times from general practitioner referral to MRI or orthopaedic consultation for the knee on patient-based outcomes.The British journal of radiology · 2012Trial
- Effectiveness of GP access to magnetic resonance imaging of the knee: a randomised trial.The British journal of general practice : the journal of the Royal College of General Practitioners · 2008Trial
- Cross-Cultural Adaptation and Validation of Knee Quality of Life 26-Item Questionnaire into Spanish in Patellofemoral Pain.Journal of clinical medicine · 2026Article
- Adaptation of the knee quality of life 26-item questionnaire to turkish: cultural adaptation, reliability, and validity.Clinical rheumatology · 2025Article
- A multi-phase approach for developing a conceptual model and preliminary content for patient-reported outcome measurement in TKA patients: from a Chinese perspective.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025Article
- Are Current Patient-Reported Outcome Measures Fit for Purpose to Evaluate Unicompartmental Knee Arthroplasty?Journal of clinical medicine · 2025Review
- Clinical value of questionnaires & physical tests for patellofemoral pain: Validity, reliability and predictive capacity.PloS one · 2024Article
- Mesenchymal stem cells for enhancing biological healing after meniscal injuries.World journal of stem cells · 2021Review
- Comparative responsiveness and minimal change of the Knee Quality of Life 26-item (KQoL-26) questionnaire.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2013Article
- The Imperforate Anus Psychosocial Questionnaire (IAPSQ): its construction and psychometric properties.Child and adolescent psychiatry and mental health · 2009Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
backgroundThis article describes the development and validation of a self-reported questionnaire, the KQoL-26, that is based on the views of patients with a suspected ligamentous or meniscal injury of the knee that assesses the impact of their knee problem on the quality of their lives.
methodsPatient interviews and focus groups were used to derive questionnaire content. The instrument was assessed for data quality, reliability, validity, and responsiveness using data from a randomised trial and patient survey about general practitioners' use of Magnetic Resonance Imaging for patients with a suspected ligamentous or meniscal injury.
resultsInterview and focus group data produced a 40-item questionnaire designed for self-completion. 559 trial patients and 323 survey patients responded to the questionnaire. Following principal components analysis and Rasch analysis, 26 items were found to contribute to three scales of knee-related quality of life: physical functioning, activity limitations, and emotional functioning. Item-total correlations ranged from 0.60-0.82. Cronbach's alpha and test retest reliability estimates were 0.91-0.94 and 0.80-0.93 respectively. Hypothesised correlations with the Lysholm Knee Scale, EQ-5D, SF-36 and knee symptom questions were evidence for construct validity. The instrument produced highly significant change scores for 65 trial patients indicating that their knee was a little or somewhat better at six months. The new instrument had higher effect sizes (range 0.86-1.13) and responsiveness statistics (range 1.50-2.13) than the EQ-5D and SF-36.
conclusionThe KQoL-26 has good evidence for internal reliability, test-retest reliability, validity and responsiveness, and is recommended for use in randomised trials and other evaluative studies of patients with a suspected ligamentous or meniscal injury.
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What OpenQuestion holds
Registered trials
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.