Should the 6-Minute Walk Test Be Compared When Conducted by 2 Different Assessors in Subjects With COPD?
BACKGROUND: The 6-min walk test (6MWT) is an important tool in the assessment of functional capacity and prognosis in patients with COPD. However, especially in long-term follow-up in clinical settings, this test may be executed by a different assessor, and it is not well known whether 6MWT has an a...
| Published in: | Respiratory Care Vol. 61; no. 10; pp. 1323 - 1331 |
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| Main Authors: | , , , , , , |
| Format: | research tables/charts Journal Article |
| Published: |
Mary Ann Liebert, Inc.
Oct2016
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=118570226&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 118570226 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00201324 4GG jtl: Respiratory Care issn: 00201324 maglogo: N pubinfo: dt: Oct2016 vid: 61 iid: 10 pid: 1365 pub: Mary Ann Liebert, Inc. place: New Rochelle, New York artinfo: ui: 118570226 118570226 118570226 10.4187/respcare.04500 118570226 ppf: 1323 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Should the 6-Minute Walk Test Be Compared When Conducted by 2 Different Assessors in Subjects With COPD? aug: au: Labadessa, Ivana G. Arcuri, Juliano F. Sentanin, Anna Cláudia da Costa, Joyce N. F. Pessoa, Bruna V. Amorim, Valéria Di Lorenzo, Pires affil: Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil sug: subj: Pulmonary Disease, Chronic Obstructive Physiopathology Interrater Reliability Biophysical Instruments Functional Assessment Human Intrarater Reliability Intraclass Correlation Coefficient Descriptive Statistics P-Value Prospective Studies Cross Sectional Studies Nonexperimental Studies Brazil Pretest-Posttest Design Respiratory Function Tests Confidence Intervals One-Way Analysis of Variance Repeated Measures Middle Age Aged Funding Source Middle Aged: 45-64 years Aged: 65+ years ab: BACKGROUND: The 6-min walk test (6MWT) is an important tool in the assessment of functional capacity and prognosis in patients with COPD. However, especially in long-term follow-up in clinical settings, this test may be executed by a different assessor, and it is not well known whether 6MWT has an acceptable inter-rater reliability. The aim of this study is to analyze the intra- and inter-rater reliability of the performance in 6MWT, its cardiorespiratory changes, and effort perception in subjects with COPD. METHODS: Thirty-two subjects with a diagnosis of COPD participated in the study, but 3 subjects did not appear on the second day of evaluation and therefore were included only in the intra-rater analysis; the first and second tests were executed by the same assessor with a 30-min interval between them, and the last was executed by a different assessor a week later. The intra-rater reliability was verified comparing the first and second 6MWT performance, and the inter-rater reliability was verified comparing the third test with the best performance of the first and second tests. RESULTS: The intraclass correlation coefficient values were >0.75 (P < .001) for the walked distance on the 6MWT; however, the limits of agreement, SE of measurement, and minimal detectable difference were higher than the minimum clinically important differences already mentioned in the literature (~25, 26, and 54 m), and the coefficient of variation was small in both intra- and inter-rater comparisons. CONCLUSIONS: The 6MWT showed excellent reliability for distance and perceived exertion and moderate to excellent for HR and SD as assessed by intra- and inter-rater analysis. Thus, based on the main study outcomes, we concluded that the 6MWT can be compared when conducted by 2 different evaluators. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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