ISWT+MID+paper_CLEAN24042019.pdf (204.5 kB)
Minimum important difference of the incremental shuttle walk test distance in patients with COPD.
journal contributionposted 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.
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.
Author affiliation/Organisation/COLLEGE OF LIFE SCIENCES/School of Medicine/Department of Infection, Immunity and Inflammation
- AM (Accepted Manuscript)