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Table 1 The characteristics of included articles of suicidal ideation and attempts

From: The global prevalence of suicidal ideation and suicide attempts among men who have sex with men: a systematic review and meta-analysis

Authors –year

Year of publication

Sample size

Country

Study populations

Age [mean or median]

Method of sampling

Suicidal ideation

continents

NOS

Suicidal ideation

 Li, R.et al. 2017 [27]

2017

458

China

MSM

32

Respondent-driven sampling

23

Asia

6

 Oginni, O. A.et al. 2019 [31]

2019

81

Nigeria

MSM

25

Non-random

25

Africa

7

 Wang, Y. Y.et al. 2019 [53]

2019

410

China

MSM

32

NR

42

Asia

5

 Hidalgo, M. A.et al. 2020 [25]

2020

448

Los Angels

MSM

NR

NR

46

America

5

 Kipke, M. D.et al. 2007 [26]

2007

526

NR

MSM

20

a venue-based probability

53

America

6

 Wu, Y.et al. 2015 [38]

2015

184

China

HIVMSM

31

NR

57

Asia

5

 Li, R.et al. 2016 [54]

2016

547

China

MSM

30

snowball

58

Asia

5

 Vu, N. T. T.et al. 2017 [36]

2017

622

Vietnam

MSM

24

convenience

61

Asia

5

 Mayer, K. H.et al. 2015 [55]

2015

307

Boston

MSM

30

Respondent-driven sampling

64

America

6

 Fletcher, J. B.et al. 2018 [23]

2018

286

USA

MSM

42

NR

66

America

5

 Loza, O.et al. 2021 [29]

2021

150

Texas

MSM

26

snow ball

66

America

5

 Sivasubramanian, M.et al. 2011 [14]

2011

150

India

MSM

25

NR

67

Asia

4

 Liu, Y.et al. 2012 [28]

2012

307

China

MSM

23

convenience

73

Asia

6

 Pan, X.et al. 2018 [32]

2018

454

China

MSM

33

Respondent-driven sampling

73

Asia

6

 Wagner, G. J, et al. 2019 [37]

2019

226

Beirut

MSM

23

NR

75

Asia

5

 Hidalgo, M. A.et al. 2015 [24]

2015

449

large Midwestern metropolitan area

MSM

19

Non-random

83

America

6

 Yu, L.et al. 2018 [39]

2018

807

China

MSM

NR

Respondent-driven sampling

87

Asia

6

 Sheridan, S.et al. 2009 [35]

2009

540

Vientiane

MSM

21

(VDTS)

90

Asia

5

 Mo, P. K. H.et al. 2018 [30]

2018

225

China

HIVMSM

32

NR

108

Asia

5

 Parker, R. D.et al. 2015 [33]

2015

265

Estonia

MSM

31

Non-random

118

Europe

6

 Rüütel, K.et al. 2017 [34]

2017

265

Estonia

MSM

32

NR

119

Europe

5

 Mu, H.et al. 2016 [8]

2016

807

China

MSM

NR

Respondent-driven sampling

148

Asia

7

 Stahlman, S.et al. 2016 [9]

2016

1555

African country

MSM

23

Respondent-driven sampling

202

Africa

6

 Biello, K. B.et al. 2016 [22]

2016

1752

Latin America

MSM

35

NR

223

America

5

Suicidal attempts

 Mo, P. K. H.et al. 2018 [30]

2018

225

China

HIVMSM

32

NR

6

Asia

5

 Wu, Y.et al. 2015 [38]

2015

184

China

HIVMSM

31

NR

10

Asia

5

 Hidalgo, M. A.et al. 2020 [25]

2020

448

Los Angeles

MSM

NR

NR

17

America

5

 Yu, L.et al. 2018 [39]

2018

807

China

MSM

NR

Respondent-driven sampling

24

Asia

6

 Loza, O.et al. 2021 [29]

2021

150

Texas

MSM

26

snowball

26

America

5

 Rüütel, K.et al. 2017 [34]

2017

265

Estonia

MSM

32

NR

29

Europe

5

 Parker, R. D.et al. 2015 [33]

2015

265

Estonia

MSM

31

Non-random

29

Europe

6

 Wagner, G. J, et al. 2019 [37]

2019

226

Beirut

MSM

23

NR

33

Asia

5

 Mu, H.et al. 2016 [8]

2016

807

China

MSM

NR

Respondent-driven sampling

37

Asia

7

 Kipke, M. D.et al. 2007 [26]

2007

526

-

MSM

20

a venue-based probability

44

America

6

 Pantalone, D. W.et al. 2018][41]

2018

166

USA

HIVMSM

44

NR

46

America

6

 Remafedi, G.et al. 2002 [42]

2002

254

Minnesota

MSM

20

random

85

America

7

 Hidalgo, M. A.et al. 2015 [24]

2015

449

large Midwestern metropolitan area

MSM

19

Non-random

174

America

6

 Hidaka, Y.et al. 2014 [40]

2014

5731

Japan

MSM

30

Non-representative

805

Asia

6