Study	Reason for exclusion
Adejoh 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Alcantara 2016	Not qualitative method of data collection and analysis
Anono 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Banda 2010	Not qualitative method of data collection and analysis
Behruzi 2010	The phenomena of interest is not labour companionship during childbirth in facilities
Behruzi 2011	The phenomena of interest is not labour companionship during childbirth in facilities
Behruzi 2014	The phenomena of interest is not labour companionship during childbirth in facilities
Binfa 2016	The phenomena of interest is not labour companionship during childbirth in facilities
Bowers 2002	Not a primary study
Bramadat 1993	The phenomena of interest is not labour companionship during childbirth in facilities
Brodrick 2008	The phenomena of interest is not labour companionship during childbirth in facilities
Brookes 1991	Not qualitative method of data collection and analysis
Bruggemann 2005	Not a primary study
Bruggemann 2008	Not a primary study
Cagle 1999	Not a primary study
Callister 1992	The phenomena of interest is not labour companionship during childbirth in facilities
Carter 2002	The phenomena of interest is not labour companionship during childbirth in facilities
Chalmers 1987	Not qualitative method of data collection and analysis
Chalmers 1994	Not qualitative method of data collection and analysis
Chamberlain 2000	The phenomena of interest is not labour companionship during childbirth in facilities
Chaturvedi 2015	The phenomena of interest is not labour companionship during childbirth in facilities
Cheung 2009	The phenomena of interest is not labour companionship during childbirth in facilities
Chi 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Cipolletta 2011	The phenomena of interest is not labour companionship during childbirth in facilities
Corbett 2012	The phenomena of interest is not labour companionship during childbirth in facilities
Crissman 2013	The phenomena of interest is not labour companionship during childbirth in facilities
de Melo 2013	Not a primary study
Dim 2011	Not a qualitative method of data collection and analysis.
DiMatteo 1993	Not qualitative method of data collection and analysis
Duggan 2012	The phenomena of interest is not labour companionship during childbirth in facilities
El‐Nemer 2006	The phenomena of interest is not labour companionship during childbirth in facilities
Essoka 2000	Not qualitative method of data collection and analysis
Etowa 2012	The phenomena of interest is not labour companionship during childbirth in facilities
Flemming 2009	Not a primary study
Gibbins 2001	The phenomena of interest is not labour companionship during childbirth in facilities
Green 2007	Not a primary study
Grewal 2008	The phenomena of interest is not labour companionship during childbirth in facilities
Hallgren 1999	The phenomena of interest is not labour companionship
Hatamleh 2013	The phenomena of interest is not labour companionship during childbirth in facilities
Hoga 2011	Not a primary study
Howarth 2011	Not facility‐based births (i.e. home births)
Ith 2013	The phenomena of interest is not labour companionship during childbirth in facilities
Johansson 2015	Not a primary study
Karlstrom 2015	The phenomena of interest is not labour companionship during childbirth in facilities
Kempe 2013	The phenomena of interest is not labour companionship during childbirth in facilities
Kgokgothwane 2002	Not qualitative method of data collection and analysis
Larkin 2012	The phenomena of interest is not labour companionship during childbirth in facilities
Maimbolwa 2003	The phenomenon of interest is not labour companionship during childbirth in health facilities
Maluka 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Mami 2013	Not facility‐based births (i.e. home births)
Maputle 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Martins 2008	Not facility‐based births (i.e. home births)
McLemore 2017	Not a primary study
Mselle 2018	The phenomena of interest is not labour companionship during childbirth in facilities
Ojelade 2017	The phenomena of interest is not labour companionship during childbirth in facilities
Papagni 2006	Not qualitative method of data collection and analysis
Pascali‐Bonaro 2004	Not a primary study
Pyone 2014	The phenomena of interest is not labour companionship during childbirth in facilities
Ramashwar 2008	Not qualitative method of data collection and analysis
Raven 2015	The phenomena of interest is not labour companionship during childbirth in facilities
Richards 1992	Not a primary study
Sapkota 2014	The phenomena of interest is not labour companionship during childbirth in facilities
Sauls 2004	Not qualitative method of data collection and analysis
Shahoei 2014	The phenomena of interest is not labour companionship during childbirth in facilities
Shimpuku 2010	The phenomena of interest is not labour companionship during childbirth in facilities
Simmonds 2012	The phenomena of interest is not labour companionship during childbirth in facilities
Spiby 2016	Not qualitative method of data collection and analysis
Steel 2013	Not qualitative method of data collection and analysis
Steel 2015	Not a primary study
Story 2012	The phenomena of interest is not labour companionship during childbirth in facilities
Tarlazzi 2015	The phenomena of interest is not labour companionship during childbirth in facilities
Theuring 2010	Not qualitative method of data collection and analysis
Udofia 2012	Not qualitative method of data collection and analysis
Vikstrom 2016	The phenomena of interest is not labour companionship during childbirth in facilities
Yuenyong 2008	Not a primary study