Table 1 Classification of patient outcomes measured in each study based on the OECD PaRIS Conceptual Framework [27] 

Aubert et al., 1998

Aveyard et al., 2007

Bellary et al., 2008

Byers et al., 2018

Caldow et al., 2006

Cherkin et al., 1996

Coppell et al., 2017

Desborough et al., 2016

Faulkner et al., 2016

Gallagher et al., 1998

Halcomb, Davies, et al., 2015

Halcomb, Salamonson, et al., 2015

Harris et al., 2015

Harris et al., 2017

Iles et al., 2014

Karnon et al., 2013

Marshall et al., 2011

Moher et al., 2001

O'Neill et al., 2014

Pearson et al., 2003

Pine et al., 1997

Waterfield et al., 2021

Zwar et al., 2010