Table 1 Countries of study

USA

39

Adams 2013 [47]; Alibrio 1991 [48]; Andreoli 2007 [49]; Aziz and Campbell-Taylor 1999 [50]; Bellomy 2014 [51]; Benedict 1975 [52]; Bertrand 2011 [53]; Bowers 2014 [54]; Buelow and Fee 2000 [55]; Castellanos 2004 [56]; Cohen-Mansfield 1995 [57]; Crogan 2001 [58]; Crogan and Evans 2001 [59]; Dimant 2001 [60]; Dorner 2010 [61]; Escott-Stump 2000 [62]; Evans 2005 [63]; Evans 2004 [64]; Evans and Crogan 2005 [12]; Evans 2003 [65]; Gibson and Barsade 2003 [66]; Hotaling 1990 [67]; Kayser-Jones and Schell 1997a [10]; Kayser-Jones and Schell 1997b [68]; Mahadevan 2014 [69]; McDonnell 2010 [70]; Mikula and Vanaman 2008 [71]; Minniear 1993; Phillips and Van Ort 1995 [72]; Remsburg 2004 [73]; Roberts 2011 [74]; Schell and Kayser-Jones 1999 [75]; Shune and Linville 2019 [30]; Sikorska-Simmons 2007 [76]; Simmons and Levy-Storms 2006 [77]; Simmons 2007 [78]; Simmons 2007 [78]; Simon 2015 [79]; Wu and Barker 2008 [80]

Australia

29

Canada

21

Chaudhury 2017a [81]; Chaudhury 2017b [82]; Carrier 2009 [1]; Caspar 2020 [83]; Gibbs-Ward and Keller 2005 [84]; Gilbart 2005 [85]; Henkusens 2014 [86]; Hung and Chaudhury 2011 [87]; Hung 2016 [88]; Keller 2017 [19, 29]; Lengyel 2004 [89]; Perivolaris 2006 [90]; Steele 1997 [91]; Way 2011 [92]; West 2003 [93]; Wu 2018 [94]; Wu 2015 [95]; Keller 2021 [96]; Caspar 2021 [97]; Trinca 2021 [98]; Morrison-Koechl 2021 [99]

Mixed

16

Anderson 2016 [100]; Aselage 2011 [7]; Chaudhury 2013 [101]; Fetherstonhaugh 2019 [102]; Hines 2010 [20]; Kayser-Jones 1982 [28]; Keller 2015 [14]; Keller 2014 [103]; Lowndes 2018 [2]; Morris 2018 [104]; Reimer and Keller 2009 [23]; Vucea 2014 [105]; Wang 2018 [106]; Watkins 2017a [6]; Williams 2012 [107]; Ballesteros-Pomar 2020 [21]

United Kingdom

12

Bamford 2012 [108]; Barnes 2013 [13]; Holmes 2019 [109]; Jones 2019 [110]; Murphy 2017 [111]; Philpin 2014 [15]; Stone 2014 [112]; Ullman 2009 [113]; Watkins 2017b [17]; Watkins 2018 [114]; Watkins 2019 [115]; Maluf 2020 [24]

European Union

12

Baur and Abma 2012 [116]; Bungaard 2005; Fjellstrom 2017 [117]; Harnett 2010 [118]; Harnett and Jönson 2017 [119]; Gastmans 1998 [120]; Grøndahl and Aagaard 2016 [25]; Josefsson 2017 [121]; Palacios-Cena 2013 [122]; Palese 2018 [26]; Sydner and Fjellström 2005 [123]; De Wit 2020 [124]

New Zealand

4

Chisholm 2011 [125]; Miles 2019 [126]; Miles 2020 [127]; Nell 2016 [128]

Taiwan

1

Chang and Roberts 2008 [129]

Japan

1

Annear 2016 [130]

Korea

1

Park 2021

Total