RT Journal Article
SR Electronic
T1 Minimum important difference of the incremental shuttle walk test distance in patients with COPD
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 994
OP 995
DO 10.1136/thoraxjnl-2018-212725
VO 74
IS 10
A1 Evans, Rachael A
A1 Singh, Sally J
YR 2019
UL http://thorax.bmj.com/content/74/10/994.abstract
AB We aimed to describe the minimum important difference (MID) of the incremental shuttle walk test (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 7-week course of pulmonary rehabilitation (PR). The MID of the ISWT using the distribution method was 36.1 m. The area under the curve to discriminate between perceived ‘improvement’ and ‘no improvement’ after PR for a change in ISWT of 35 m was 0.66 (0.58–0.73). The MID of the ISWT is therefore between 35.0 and 36.1 m.