Received: 28 January 2021
Accepted: 25 June 2021
First Online: 16 July 2021
: This is a study of a database collected in previous studies and approved by St Vincent’s Hospital Melbourne Human Research and Ethics Committee. All studies were carried out in accordance with the guidelines issued by the <i>National Health and Medical Research Council of Australia</i> for Ethical Conduct in Human Research (2007, and updated May 2015) and in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments<i>.</i> Clinical characteristics of participating subjects and inclusion criteria into the analyses are discussed below.
: Not applicable.
: Global Kinetics (GK) is the manufacturer and distributor of the Parkinson’s KinetiGraph. HK and NS are employed by GK. MH has financial interests in GK. GK management had no direct role in the instigation, design collection, analyses, or interpretation of data, in the writing of the manuscript, nor have they been consulted as to whether the data should be published.