Table 1

Selected characteristics of the 75 studies included in this systematic review and meta-analysis

First author, yearCountrySurvey yearsSample sizeAverage ageMen, No. (%)Scores
Smith et al,43 2015UK20122978NRNR6
Cochran et al,44 2005USA200240827.2214 (52.45)5
Hauer et al,45 2008USA20071177NRNR6
Johnson et al,46 2012USA2012622NRNR6
Kiolbassa et al,47 2011Germany2010111424.1408 (36.62)5
Klingensmith et al,48 2015USA2013792NR539 (68.06)6
Lee et al,49 2012USA2012100NR58 (58)7
Macdonald et al,50 2012New Zealand2011134NR79 (58.96)7
Parsa et al,39 2010Iran2006–200713727.3449 (35.77)7
Paiva et al,51 1982USA1982144NRNR6
Ni Chroinin et al,52 2013UK2009–2011274NR112 (40.89)7
Newton et al,34 2005USA1998–20041258NR642 (51.03)8
Rogers et al,53 1990USA1989266NR205 (77.07)6
Abendroth et al,54 2014Germany2007–201245NR14 (31)7
Alawad et al,55 2015USA2010–201145NR36 (80)8
Azizzadeh et al,56 2003USA2002130NRNR6
Celenza et al,57 2012Australia2009216NR121 (56.02)8
Dolan-Evans et al,58 2014Australia2013419NR215 (51.31)8
Boyd et al,59 2009USA2005–20065848NR2982 (50.99)8
Egerton et al,60 1985Ireland1977–19811343082 (61.19)6
Diderichsen et al,61 2013Sweden2006–200937227157 (42.20)6
Ferrari et al,62 2013Italy, UK2009–20114525NR9
Freire et al,63 2011Brazil2006–200829023102 (35.17)7
Buddeberg-Fischer et al,64 2006Switzerland2001–200352231.1241 (46.17)9
Dorsey et al,65 2005USA200311 029NR4964 (45.01)6
Ekenze et al,66 2013Nigeria2009–20109625.9NR7
Barikani et al,67 2012Australia2008–20094921.7NR6
Bittaye et al,68 2012Gambia201110624.148 (45.28)6
Bonura et al,69 2016USA2015590NR321 (54.40)9
Al-Fouzan et al,70 2012Kuwait2011–2012144NRNR7
AlKot et al,71 2015Egypt201345121.8NR7
Borges et al,72 2009USA2001–2005341NRNR5
Budd et al,73 2011UK201187022NR7
Corrigan et al,74 2007Ireland2007222NR142 (63.96)7
Davis et al,75 2016UK2016173NR76 (43.93)7
Deutsch et al,76 2015Germany201165927.9NR8
Gardner et al,77 2014Australia1993–2005631NRNR7
Dias et al,78 2013UK2013495NR438 (88.48)5
Goltz et al,79 2013USA201210224.534 (33.33)6
Gupta et al,80 2013India2013243NR179 (73.36)6
Hanzlick et al,81 2008USA2006161NRNR6
Harris et al,82 2005USA1991–2002104NR53 (50.96)6
Hauer et al,83 2008USA200880NRNR6
Labiris et al,84 2014Greece201411123.655 (49.54)6
Lambert et al,85 2008UK200717 393NRNR6
Shah et al,86 2012USA2011892NRNR6
Lefevre et al,87 2010USA20081555NR589 (37.88)6
Vicente et al,88 2013Chile201330NRNR6
Wiesenfeld et al,892014Canada201360NRNR7
Lam et al,90 2016Hong Kong201522823NR9
Hartung et al,91 2005USA200419220.5974 (38.54)4
Girasek et al,92 2011Hungary2011536NRNR5
Zuccato et al,93 2015Canada201237NR24 (65)6
Wilbanks et al,94 2015USA2011–201329 227NR15 164 (51.99)9
West et al,95 2009USA2005–200714 890NR8700 (58.43)6
Watmough et al,96 2007UK2005116NR66 (56.90)4
Thakur et al,97 2001USA200156NR53 (95)8
Scott et al,98 2011Canada2002–20041542NRNR6
Schnuth et al,99 2003USA2002203NR72 (53.47)6
Richards et al,100 2009UK2009150NR108 (72.00)5
Reed et al,101 2009USA20082022NR1354 (66.96)9
de Souza et al,102 2015Portugal20121303NRNR7
Pikoulis et al,103 2010Greece2006–200787NRNR6
Ozer et al,104 2015Turkey20139827.726 (26.53)6
Noble et al,105 2004Canada200421 296NRNR8
Noble et al,106 2010Canada2007120NRNR5
Newton et al,34 2005USA20041286NRNR6
Moore et al,107 2012USA201133726179 (53.12)6
Momen et al,108 2015Iran2014–20153835.611 (29)6
Mehmood et al,109 2012Saudi Arabia2012550NR348 (63.27)6
Loriot et al,110 2010France200744NR17 (39)7
Lefevre et al,111 2010France200852223.8198 (37.93)7
Vo et al,112 2017Canada20179022.552 (57.78)5
Grasreiner et al,113 2018Germany2014–20161812433 (18.10)6
Alkhannen et al,114 2018Saudi Arabia2017436NA250 (57.00)5
  • Footnotes, scores: quality score of the AHRQ scale.