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Minimum important difference of the incremental shuttle walk test distance in patients with COPD.

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journal contribution
posted on 2019-07-08, 15:38 authored by Rachael A. Evans, Sally J. Singh
We aimed to describe the minimum important difference (MID) of the ISWT in patients with COPD using both distribution- and anchor-based methods. Two cohorts were used (n=613) with eligibility criteria of a clinical diagnosis of COPD, an FEV1/FVC<70%, and an ISWT (after familiarisation) before and after a seven week course of pulmonary rehabilitation (PR). The MID of the ISWT using the distribution method was 36.1m. The area under the curve to discriminate between perceived ‘improvement’ or ‘no improvement’ post-PR for a change in ISWT of 35m was 0.66 [0.58–0.73]. The MID of the ISWT is therefore between 35.0-36.1m.

Funding

RAE is funded by a National Institute for Health Research (NIHR) Clinician Scientist Fellowship (CS-2016-16-020). This research was supported by the NIHR Leicester Biomedical Research Centre - Respiratory Theme.

History

Citation

Thorax, 2019

Author affiliation

/Organisation/COLLEGE OF LIFE SCIENCES/School of Medicine/Department of Infection, Immunity and Inflammation

Version

  • AM (Accepted Manuscript)

Published in

Thorax

Publisher

BMJ Publishing Group, British Thoracic Society (BTS)

issn

0040-6376

Acceptance date

2019-05-13

Copyright date

2019

Available date

2019-07-08

Publisher version

https://thorax.bmj.com/content/early/2019/05/30/thoraxjnl-2018-212725

Language

en

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