Table 2 Pain outcomes extracted from each study

Alghanem 2010 (Alghanem et al., 2010)

Yes

Yes

Areeruk 2016 (Areeruk et al., 2016)

Yes

Yes

Yes

Yes

Yes

Badawy 2015 (Badawy & Sakka, 2015)

Yes

Yes

Yes

Yes

Yes

Bataille 2016 (Bataille et al., 2016)

Yes

Yes

Yes

Yes

Batistaki 2019 (Batistaki et al., 2019)

Yes

Yes

Yes

Benevides 2013 (Benevides et al., 2013)

Yes

Yes

Bianchin 2007 (Bianchin et al., 2007)

Yes

Yes

Yes

Bilgin 2010 (Bilgin et al., 2010)

Yes

Bisgaard 2003 (Bisgaard et al., 2003)

Yes

Yes

Coloma 2002 (Coloma et al., 2002)

Yes

Yes

Yes

Corcoran 2017 (Corcoran et al., 2017)

Yes

Yes

De Oliveira 2011 (De Oliveira Jr. et al., 2011b)

Yes

Yes

Yes

Elhakim 2002 (Elhakim et al., 2002)

Yes

Yes

Yes

Yes

Feo 2006 (Feo et al., 2006)

Yes

Yes

Yes

Fukami 2009 (Fukami et al., 2009)

Yes

Yes

Yes

Gautam 2008 (Gautam et al., 2008)

Yes

Yes

Yes

Yes

Yes

Hammas 2002 (Hammas et al., 2002)

Yes

Ionescu 2014 (Ionescu et al., 2014)

Yes

Jo 2012 (Jo et al., 2012)

Yes

Yes

Jokela 2009 (Jokela et al., 2009)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Kasagi 2013 (Kasagi et al., 2013)

Yes

Yes

Kassim 2018 (Kassim et al., 2018)

Yes

Yes

Ko-iam 2015 (Ko-Iam et al., 2015)

Yes

Yes

Kurz 2015 (Kurz et al., 2015)

Yes

Yes

Lee 2017 (Lee et al., 2017)

Yes

Yes

Yes

Yes

Yes

Lim 2011 (Lim et al., 2011)

Yes

Yes

Yes

Yes

Liu 1998 (Liu et al., 1998)

Yes

Liu 1999 (Liu et al., 1999)

Yes

Yes

Yes

Lopez-Olaondo 1996 (Lopez-Olaondo et al., 1996)

Yes

Maddali 2003 (Maddali et al., 2003)

Yes

Mathiesen 2009 (Mathiesen et al., 2009) 

Yes

Yes

Yes

Yes

Yes

McKenzie 1997 (McKenzie et al., 1997)

Yes

Yes

Yes

Murphy 2011 (Murphy et al., 2011)

Yes

Yes

Yes

Yes

Yes

Yes

Murphy 2014 (Murphy et al., 2014)

Yes

Yes

Yes

Yes

Nesek-Adam 2007 (Nesek-Adam et al., 2007)

Yes

Yes

Yes

Yes

Yes

Olajumoke 2013 (Olajumoke et al., 2013)

Yes

Pan 2008 (Pan et al., 2008)

Yes

Yes

Yes

Yes

Yes

Pauls 2015 (Pauls et al., 2015)

Yes

Yes

Regasa 2020 (Regasa et al., 2020)

Yes

Rothenberg 1998 (Rothenberg et al., 1998)

Yes

Yes

Yes

Ryu 2013 (Ryu et al., 2013)

Yes

Yes

Yes

Sanchez-Ledesma 2002 (Sanchez-Ledesma et al., 2002)

Yes

Yes

Yes

Yes

Yes

Yes

Sanchez-Rodriquez 2010 (Sanchez-Rodriguez et al., 2010)

Yes

Yes

Yes

Shrestha 2014 (Shrestha et al., 2014)

Yes

Sistla 2009 (Sistla et al., 2009)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Thangaswamy 2010 (Thangaswamy et al., 2010)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Tolver 2012 (Tolver et al., 2012)

Yes

Yes

Yes

Yes

Yes

Viriyaroj 2008 (Viriyaroj et al., 2015)

Yes

Yes

Yes

Yes

Wang 1999 (Wang et al., 1999)

Yes

Yes

Wang 2000 (Wang et al., 2000)

Yes

Yes

Wu 2009 (Wu et al., 2009)

Yes

Yuksek 2003 (Yuksek et al., 2003)

Yes

Yes