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Table 1 Descriptive characteristics from 23 studies on the role of theT102C polymorphism of the 5HTR2A gene in suicidal behavior

From: Association of the 5HTR2A gene with suicidal behavior: CASE-control study and updated meta-analysis

Study (Year)

Sample Size n (Cases-Controls)

Location

Diagnosis

Number of C alleles

Gender (males/females)

Mean age (years)

Cases

Controls

Cases

Controls

Tan (2002)

47/94

Singapore

SA with schizophrenia

32

47

94

  

Pooley (2003)

129/329

United Kingdom Caucasians

SA

154

52/77

138/191

38

38

Chen (2001)

471/523

Hong Kong

SA with schizophrenia

193

314

308/215

  

Saiz (2008)

193/420

Asturias in Northern Spain

SA

196

70/123

216/204

35

40

Du (2000)

42/131

Ottowa

SA with major depression

99

48/30

61/70

40

36

Wrsozek (2011)

38/118

Polish Caucasians

SA with alcohol-dependent

33

26/12

81/29

>18

>18

Khait (2005)

52/63

European Caucasians

SA with depression

54

30/24

12/51

37

40

Correa (2007)

42/85

Brazilian

SA with schizophrenia

83

23/19

45/40

  

Vaquero-Lorenzo (2008)

441/410

Spanish Caucasians

SA

472

161/280

237-173

38

36

Du (1999)

24/31

Budapest, Hungary

SC with depression

32

24

31

45

50

Bondy (2000)

131/125

Caucasians Germany

SA with major depression

142

91/40

60/75

46

47

Zhang (2008)

297/303

Shangai

SA with schizophrenia, anxiety and organic mental disorder

229

171/126

217/112

46

43

Preuss (2000)

45/117

Caucasians Germany

SA with alcohol-dependence

52

45

56/61

 

47

Preuss (2000)

62/117

Caucasians Germany

SI with alcohol-dependence

66

62

56/61

 

47

Ertugrul (2004)

71/26

Caucacians and African-americans

SA with schizophrenia

49

26/12

81/29

  

Crawford (2000)

78/131

Caucasians Australian

SC

73

68

95

  

Crawford (2000)

68/95

Caucasians Australian

SI

99

78

131

  

Turecki (1999)

56/126

Montreal

SC

68

56

126

36

33

Ono (2001)

151/163

Japanese

SC

157

106/45

108/55

47

47

Zhang (1997)

15/150

Japanese

SA with mood disorders

21

15

65/85

33

37

Tsai (1999)

61/96

Taipei

SA with mood disorders

49

61

96

 

71

Arias (2001)

33/164

Spanish

SA

42

33

83/71

55

41

Tovilla (2012)

161/244

Mexican

SA

220

61/100

82/162

25

33

  1. SA: Suicide attempters; SC: Suicide completers; SI: Suicide ideation.