Reply to: Reproducibility of Clinically Meaningful Change in Physical Capacity Tested by Online 6-Minute Walk Test

David D Ma¹, Zhixin Liu¹, Kimberley Au¹+5

• ¹David D. Ma, MBBS, DM, St Vincent's Hospital Sydney, NSW, Australia, Clinical School, Faculty of Medicine, UNSW Sydney, NSW, Australia, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia; Zhixin Liu, PhD, Stats Central, Mark Wainwright Analytical Centre, UNSW Sydney, NSW, Australia; Kimberley Au, BSc, St Vincent's Hospital Sydney, NSW, Australia, Clinical School, Faculty of Medicine, UNSW Sydney, NSW, Australia; Mei Tran, MPsych, St Vincent's Hospital Sydney, NSW, Australia; Crisbel M. Artuz, PhD, Clinical School, Faculty of Medicine, UNSW Sydney, NSW, Australia, St Vincent's Centre for Applied Medical Research, Sydney, NSW, Australia; Matthew Greenwood, MBBS, Royal North Shore Hospital, St Leonards, NSW, Australia; Ian Bilmon, MBBS, MPhil, Westmead Hospital, Westmead, NSW, Australia, University of Sydney, NSW, Australia; and David Kliman, MBBS, St Vincent's Hospital Sydney, NSW, Australia, Clinical School, Faculty of Medicine, UNSW Sydney, NSW, Australia.