{"doi":"10.1016/j.jvs.2019.02.056","title":"Test-retest reliability, agreement, and minimal detectable change in the 6-minute walk test in patients with intermittent claudication","abstract":null,"journal":"Journal of Vascular Surgery","year":2020,"id":671792,"datarank":0.519860385419959,"base_score":3.4657359027997265,"endowment":3.4657359027997265,"self_citation_contribution":0.519860385419959,"citation_network_contribution":0.0,"self_endowment_contribution":0.519860385419959,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":31,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1525928,"name":"Åsa Cider","orcid":"0000-0003-2140-8569","position":1,"is_corresponding":false},{"id":1755116,"name":"Lennart Jivegård","orcid":null,"position":2,"is_corresponding":false},{"id":1244218,"name":"Joakim Nordanstig","orcid":"0000-0002-2670-2268","position":3,"is_corresponding":false},{"id":1755117,"name":"Susanna Wittboldt","orcid":null,"position":4,"is_corresponding":false},{"id":1755118,"name":"Maria Bäck","orcid":null,"position":5,"is_corresponding":false},{"id":1755115,"name":"Anna Sandberg","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Test-retest reliability, agreement, and minimal detectable change in the 6-minute walk test in patients with intermittent claudication","abstract":"OBJECTIVE: Standardized walk tests are important for objective assessment of walking distance in patients with intermittent claudication (IC). The 6-minute walk test (6MWT) has been suggested to correlate more closely than testing on a treadmill with everyday ambulatory function, but its measurement properties have hardly been studied in IC. The aim of this study was to determine the test-retest reliability, agreement, standard error of measurement (SEM), and minimal detectable change of the 6MWT in patients with IC.\nMETHODS: This reliability and agreement study recruited 102 patients with stable IC (mean age, 72 ± 7.4 years; 43 women) from the vascular surgery outpatient clinic at Sahlgrenska University Hospital in Sweden. The patients performed the 6MWT twice, with at least 30 minutes of rest between tests. To determine test-retest reliability, the intraclass correlation coefficient was calculated. Bland-Altman plots were used to measure agreement.\nRESULTS: The mean walking distance in both test and retest was 397.8 m (standard deviation, 81.2 m; N = 100), and the individual walking distance varied from 175 to 600 m. Excellent test-retest reliability for the 6MWT (intraclass correlation coefficient, 0.95; 95% confidence interval, 0.9-0.97) was observed. The SEM was 16.6 m (95% confidence interval, 14.6-19.3), the SEM percentage was 4.2%, and the minimal detectable change was 46 m. Five observations (5%) were positioned outside the limits of agreement; there was a small proportional bias, and the scatter of values for differences decreased as the average values increased.\nCONCLUSIONS: The excellent test-retest reliability implies that it is sufficient for a patient with IC to perform the 6MWT once, at every test occasion. For the individual, an improvement or deterioration in maximum walking distance of >46 m after an intervention would be required to be 95% confident that the change is significant. Being a simple and clinically useful test, the 6MWT can be widely used to evaluate the effects of different interventions in patients with IC.","is_dataset_classified":null,"base_score":3.4657359027997265,"endowment":3.4657359027997265,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"31147129","pmcid":null,"openalex_id":"https://openalex.org/W2947702707","authors":[],"funders":[],"total_grants":0,"fwci":2.9207,"citation_percentile":0.90858268,"influential_citations":0,"citation_trend":[{"year":2020,"count":3},{"year":2021,"count":6},{"year":2022,"count":5},{"year":2023,"count":6},{"year":2024,"count":6},{"year":2025,"count":3},{"year":2026,"count":2}],"oa_status":"bronze","license":"http://www.elsevier.com/open-access/userlicense/1.0/","oa_locations":[{"url":"http://www.jvascsurg.org/article/S0741521419305312/pdf","host_type":"journal"},{"url":"http://www.jvascsurg.org/article/S0741521419305312/pdf","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S0741521419305312?httpAccept=text/xml","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S0741521419305312?httpAccept=text/plain","host_type":"publisher"},{"url":"https://doi.org/10.1016/j.jvs.2019.02.056","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/31147129","host_type":"repository"}],"fields_of_study":["Peripheral Artery Disease Management","Diagnosis and Treatment of Venous Diseases","Renal and Vascular Pathologies","Aged","Aged, 80 and over","Exercise Tolerance","Female","Humans","Intermittent Claudication","Male","Minimal Clinically Important Difference","Peripheral Arterial Disease","Predictive Value of Tests","Prognosis","Prospective Studies","Reproducibility of Results","Time Factors","Walk Test","Walking"],"mesh_terms":["Walk Test","Minimal Clinically Important Difference","Aged","Aged, 80 and over","Female","Humans","Intermittent Claudication","Male","Predictive Value of Tests","Prognosis","Prospective Studies","Time Factors","Reproducibility of Results","Walking","Exercise Tolerance","Peripheral Arterial Disease"],"keywords":["Intraclass correlation","Medicine","Confidence interval","Standard error","Claudication","Limits of agreement","Ambulatory","Intermittent claudication","Physical therapy","Reliability (semiconductor)","Treadmill","Reproducibility","Bland–Altman plot","Test (biology)","Statistics","Surgery","Nuclear medicine","Internal medicine","Mathematics","Psychometrics","Arterial disease","Vascular disease","Peripheral artery disease","Physical fitness","Reproducibility of results","Walking distance"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Good health and well-being"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-16T04:34:29.862804Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}