Table 1 Characteristics of the included studies included in this article

Chen changhui1992 [9]

Beijing

C

1986.1–1986.6

5172(2385/2787)

10

26

39

≥60

DSM-III

8

gao surong1989 [10]

Beijing

C

1986.4–1986.6

906(409/497)

9

24

35

≥60

DSM-III

8

gao zhixu 1993 [11]

Shanghai

C + R

1990.10–1990.12

3779(1499/2280)

119

32

159

≥60

DSM-III-R

9

wang dao1996 [12]

Shanghai

C + R

1991

1515(610/905)

27

4

33

≥55

DSM-III-R

8

mao ruihe1993 [13]

Fujian

C + R

1992.6–1992.9

1982(787/1195)

29

22

58

≥60

DSM-III-R

9

xue guanhua1997 [7]

Guangdong

C + R

1994

3285(1579/1706)

23

18

47

≥60

DSM-III-R

9

tang mouni1999 [14]

Sichuan

R

1994

5987(2653/3334)

86

11

104

≥65

DSM-III-R

8

li zengjin1997 [15]

Beijing

C

1994.11–1995.5

1027(372/655)

38

25

63

≥60

DSM-III-R

8

chen zhanying1998 [16]

Xinjiang

C + R

1995.1–1995.3

2687(1380/1307)

11

37

48

≥55

DSM-III

8

lv shuchen1998 [51]

Zhejiang

C

1995.10–1996.6

1689(823/866)

101

17

119

≥60

DSM-III-R

8

zhang jingli1998 [25]

Beijing

C

1995.12–1996.12

1243(760/483)

17

12

29

≥60

DSM-III-R

7

tang zhe2002 [52]

Beijing

C + R

1996–1998

2788(1356/1432)

140

43

208

≥60

DSM-III-R

9

wang tianxiang1999 [17]

Anhui

C + R

1997

2749(998/1751)

109

27

143

≥65

ICD-10

9

zhou fen2001 [26]

Shanghai

C + R

1997

15,910(7148/8762)

344

98

478

≥55

DSM-IV

9

lishuran1999 [27]

Beijing

C

1997

1593(697/896)

22

15

40

≥60

ICD-10

7

tang mouni2001 [18]

Sichuan

C + R

1997.6–1998.4

5353(2552/2801)

110

20

143

≥55

DSM-III-R

9

xiao zhijie1999 [19]

Hunan

C + R

1997.6–1998.5

3287(1551/1736)

47

26

86

≥55

DSM-IV

9

qu qiumin2001 [28]

Shanxi

C + R

1997.9–1998.12

4850(2040/2810)

100

54

172

≥55

DSM-IV

9

zhang zhanxing [20]

Shanghai

C + R

1999

1186(597/589)

11

5

33

≥55

DSM-III-R

9

fan jianxiong2000 [48]

Jiangsu

C

1999.5–1999.6

3268(1589/1679)

31

16

48

≥60

DSM-III-R

9

ma cui2005 [40]

Guangdong

C + R

2000

3780(1539/2241)

128

44

182

≥65

DSM-IV

9

tang mouni2005 [29]

Sichuan

C + R

2000.10–2001.3

3908(1924/1984)

78

18

107

≥55

DSM-III-R

9

gongjianbing2002 [53]

Hainan

C + R

2001.10–2001.12

2961(1210/1751)

25

9

39

≥60

CCMD-III-R

9

zhou kaili2002 [21]

Chongqing

C

2001.3–2001.5

1519(611/908)

73

9

87

≥65

DSM-IV-R

9

gao quwen2004 [54]

Guangdong

C

2002

1839(1727/112)

22

40

69

≥60

DSM-IV

7

yuan yefeng2005 [30]

Jiangxi

C + R

2002.3–2002.4

2126(1053/1073)

72

14

93

≥60

ICD-10

8

chen weixiong2004 [31]

Hainan

C

2002.5–2002.10

12,628(6193/6435)

80

113

193

≥60

DSM-III-R

9

li wenbiao2003 [32]

C

2002.7–2002.8

2324(1846/478)

31

31

62

≥60

ICD-10

7

li keqing2008 [33]

Hebei

C + R

2004

2126(1100/1026)

166

52

218

≥65

DSM-IV

9

huang wenyong2007 [22]

Guizhou

C

2005

3229(1227/2002)

41

18

64

≥60

DSM-IV

8

chen bin2009 [55]

Fujian

C

2006.7–2007.4

2373(1039/1334)

81

35

141

≥60

DSM-IV

8

wang hongyan2009 [34]

Shandong

C

2007

618(211/407)

42

10

52

≥60

DSM-IV

7

tan jiehua2007 [35]

Hubei

C + R

2007.1–2007.12

3908(1924/1984)

78

18

107

≥55

DSM-III-R

9

zheng xiuxia2010 [41]

Beijing

C + R

2007.5–2007.9

1756(737/1019)

57

69

126

≥60

ICD-10

9

Zhang honghui 2008 [23]

Fujian

R

2007.7–2007.11

2696(1104/1592)

134

32

166

≥65

DSM-IV

8

fan qinghua2011 [36]

Shanxi

C + R

2008

1826(1126/700)

38

18

74

≥60

DSM-IV

9

wang ying2010 [37]

Liaoning

C

2008.1–2009.1

2100(1136/964)

76

47

143

≥60

DSM-IV-R

7

gao ying2009 [38]

Shanxi

C

2008.3–2008.12

312(163/149)

29

8

37

≥65

DSM-III-R

7

ma yong 2013 [56]

Shanghai

C

2010

2442(1130/1312)

101

89

190

≥65

DSM-IV

8

kang meiyu2011 [42]

Hebei

C + R

2010.1–2010.8

3632(1937/1695)

177

57

263

≥60

DSM-IV

9

meng xinling2014 [39]

Xinjiang

C + R

2010.6–2012.8

2532(1221/1311)

149

68

237

≥55

DSM-IV

9

meng xinling2014 [39]

Xinjiang

C + R

2010.6–2012.8

1078(497/581)

48

21

76

≥55

DSM-IV

9

lao meili2011 [43]

Hainan

C + R

2010.7–2010.8

7665(3509/4156)

111

48

159

≥55

HDS

9

sun hongxian2012 [44]

Shanghai

C

2010–2011

1472(666/806)

56

18

79

≥60

DSM-IV-R

9

cheng qi2013 [57]

Shanghai

R

2011

1472(665/807)

53

21

157

≥60

DSM-IV-R

9

ji yong2015 [58]

Tianjin

R

2011–2012

5578(2482/3096)

299

96

84

≥60

DSM-IV

8

tang jiangping2014 [45]

Hunan

C + R

2011.10–2012.12

10,026(4845/5181)

275

85

395

≥55

DSM-IV

8

wei chongjuan2014 [46]

Tianjin

C

2012

1324(1078/246)

28

28

497

≥55

DSM-IV-R

9

ding ding 2014 [47]

Shanghai

C

2012

3141(1438/1703)

113

25

72

≥60

DSM-IV-R

7

li haihong2015 [59]

Guangxi

C

2012.6–2014.3

889(389/500)

38

18

59

≥60

DSM-IV-R

9

li chonghui2015 [60]

Tianjin

C

2014

2532(1091/1441)

144

59

228

≥60

DSM-IV-R

9