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Table 1 Major characteristics of studies: the prevalence of prenatal and postpartum depression

From: Prevalence of perinatal depression among Japanese women: a meta-analysis

Author, year

Time classification

Measure

Sample size

Identified cases

Prevalence (%)

Akiyama 2014 [45]

1- to 3-month postpartum

EPDS

936

324

34.6

Amagai 2014 [46]

Third trimester

EPDS

151

33

21.9

Arai 2009 [47]

1-month postpartum

EPDS

149

33

22.1

0- to 1-month postpartum

EPDS

149

33

22.1

Arakawa 2016 [48]

1-month postpartum

EPDS

257

23

8.9

0- to 1-month postpartum

EPDS

253

36

14.2

1- to 3-month postpartum

EPDS

289

26

9.0

Arimoto 2010 [49]

1-month postpartum

EPDS

276

66

23.9

0- to 1-month postpartum

EPDS

276

66

23.9

Doi 2015 [50]

0- to 1-month postpartum

EPDS

100

20

20.0

Ebine 2007 [51]

1-month postpartum

EPDS

691

131

19.0

0- to 1-month postpartum

EPDS

691

131

19.0

Emori 2014 [52]

Third trimester

EPDS

110

20

18.2

Fujita 2007 [54]

1-month postpartum

EPDS

1869

222

11.9

0- to 1-month postpartum

EPDS

1869

222

11.9

Fujita 2015 [53]

1-month postpartum

EPDS

179

38

21.2

0- to 1-month postpartum

EPDS

179

38

21.2

Fukuda 2011 [55]

1-month postpartum

EPDS

299

57

19.1

0- to 1-month postpartum

EPDS

299

57

19.1

Fukuzawa 2003 [56]

0- to 1-month postpartum

EPDS

194

25

12.9

1- to 3-month postpartum

EPDS

194

10

5.2

Fukuzawa 2004 [57]

1-month postpartum

EPDS

664

31

4.7

0- to 1-month postpartum

EPDS

664

72

10.8

Fukuzawa 2006 [58]

1-month postpartum

EPDS

356

17

4.8

0- to 1-month postpartum

EPDS

356

32

9.0

Fukuzawa 2011 [59]

1-month postpartum

EPDS

135

8

5.9

0- to 1-month postpartum

EPDS

135

13

9.6

1- to 3-month postpartum

EPDS

135

11

8.1

3- to 6-month postpartum

EPDS

135

13

9.6

6- to 12-month postpartum

EPDS

135

13

9.6

Goto 2010 [60]

3- to 6-month postpartum

EPDS

378

32

8.5

Hamazaki 2009 [61]

1-month postpartum

EPDS

986

91

9.2

0- to 1-month postpartum

EPDS

986

91

9.2

Harada 2008 [62]

1-month postpartum

EPDS

820

68

8.3

0- to 1-month postpartum

EPDS

820

68

8.3

Harada 2009 [63]

1-month postpartum

EPDS

143

18

12.6

0- to 1-month postpartum

EPDS

143

20

14.0

3- to 6-month postpartum

EPDS

143

12

8.4

Hashimoto 2014 [64]

1- to 3-month postpartum

EPDS

1222

102

8.3

Honda 2008 [65]

1-month postpartum

EPDS

230

31

13.5

 

0- to 1-month postpartum

EPDS

230

31

13.5

Hori 2006 [66]

1- to 3-month postpartum

EPDS

217

29

13.4

Hosoya 2006 [67]

1-month postpartum

EPDS

204

33

16.2

0- to 1-month postpartum

EPDS

204

33

16.2

Hozumi 2005 [68]

0- to 1-month postpartum

EPDS

110

16

14.5

Ichikawa 2008 [69]

1-month postpartum

EPDS

152

29

19.1

0- to 1-month postpartum

EPDS

152

29

19.1

Imura 2004 [70]

0- to 1-month postpartum

EPDS

102

21

20.6

Ishii 2010 [71]

1-month postpartum

EPDS

109

4

3.7

0- to 1-month postpartum

EPDS

109

6

5.5

Ishikawa 2011 [72]

Third trimester

EPDS

424

48

11.3

Iwafuji 2007 [73]

3- to 6-month postpartum

CES-D

129

13

10.1

6- to 12-month postpartum

CES-D

129

20

15.5

Iwamoto 2010 [74]

1-month postpartum

EPDS

590

30

5.1

0- to 1-month postpartum

EPDS

590

65

11.0

3- to 6-month postpartum

EPDS

560

41

7.3

Third trimester

EPDS

590

101

17.1

Iwata 2016 [75]

0- to 1-month postpartum

EPDS

2854

437

15.3

Iwata 2016 [76]

1- to 3-month postpartum

EPDS

2709

261

9.6

3- to 6-month postpartum

EPDS

2709

222

8.2

Kanai 2016 [77]

1-month postpartum

EPDS

113

8

7.1

0- to 1-month postpartum

EPDS

113

8

7.1

Kanazawa 2008 [78]

1-month postpartum

EPDS

111

16

14.4

0- to 1-month postpartum

EPDS

111

16

14.4

Kaneko 2008 [79]

1-month postpartum

EPDS

103

15

14.6

0- to 1-month postpartum

EPDS

103

15

14.6

Second trimester

EPDS

103

13

12.6

Kawai 2017 [80]

0- to 1-month postpartum

EPDS

951

115

12.1

1- to 3-month postpartum

EPDS

951

47

4.9

6- to 12-month postpartum

EPDS

951

40

4.2

Kawamura 2006 [81]

0- to 1-month postpartum

EPDS

506

100

19.8

3- to 6-month postpartum

EPDS

2283

226

9.9

Kikuchi 2010 [83]

1-month postpartum

EPDS

113

17

15.0

0- to 1-month postpartum

EPDS

113

17

15.0

3- to 6-month postpartum

EPDS

113

17

15.0

Kinjo 2011 [84]

1-month postpartum

EPDS

152

39

25.7

0- to 1-month postpartum

EPDS

152

39

25.7

Kinjo 2013 [85]

1- to 3-month postpartum

CES-D

289

96

33.2

Second trimester

CES-D

320

100

31.3

Kishi 2009 [86]

1-month postpartum

EPDS

160

20

12.5

0- to 1-month postpartum

EPDS

160

20

12.5

Kobayashi 2017 [10]

1-month postpartum

EPDS

967

191

19.8

0- to 1-month postpartum

EPDS

967

191

19.8

3- to 6-month postpartum

EPDS

710

91

12.8

Kondo 2011 [88]

1- to 3-month postpartum

EPDS

129

14

10.9

Kubota 2014 [89]

1-month postpartum

EPDS

690

127

18.4

0- to 1-month postpartum

EPDS

690

127

18.4

Maruyama 2012 [106]

1-month postpartum

EPDS

143

36

25.2

0- to 1-month postpartum

EPDS

143

36

25.2

Masuda 2012 [90]

1-month postpartum

EPDS

595

89

15.0

0- to 1-month postpartum

EPDS

595

89

15.0

Matsukida 2009 [91]

0- to 1-month postpartum

EPDS

1240

102

8.2

Matsuoka 2010 [93]

1- to 3-month postpartum

EPDS

508

69

13.6

Matsuzaki 2009 [94]

1-month postpartum

EPDS

443

40

9.0

0- to 1-month postpartum

EPDS

436

37

8.5

1- to 3-month postpartum

EPDS

154

13

8.4

Mishina 2009 [95]

1-month postpartum

EPDS

103

17

16.5

0- to 1-month postpartum

EPDS

103

17

16.5

Mishina 2010 [96]

1-month postpartum

EPDS

279

43

15.4

0- to 1-month postpartum

EPDS

279

43

15.4

Mishina 2012 [97]

0- to 1-month postpartum

EPDS

631

87

13.8

1- to 3-month postpartum

EPDS

1621

182

11.2

3- to 6-month postpartum

EPDS

312

41

13.1

Mitamura 2008 [98]

1-month postpartum

EPDS

503

40

8.0

0- to 1-month postpartum

EPDS

503

40

8.0

Miyake 2011[100]

3- to 6-month postpartum

EPDS

771

106

13.7

Miyake 2016 [99]

3- to 6-month postpartum

CES-D

1319

108

8.2

Miyauchi 2014 [102]

1- to 3-month postpartum

EPDS

410

31

7.6

Mori 2017 [104]

1-month postpartum

EPDS

2854

437

15.3

Morikawa 2015 [105]

Second trimester

EPDS

371

68

18.3

Muchanga 2017 [9]

1-month postpartum

EPDS

82,489

11,341

13.7

0- to 1-month postpartum

EPDS

82,489

11,341

13.7

Murayama 2010 [107]

1- to 3-month postpartum

EPDS

230

23

10.0

Nagatsuru 2006 [108]

1-month postpartum

EPDS

252

62

24.6

0- to 1-month postpartum

EPDS

252

62

24.6

Nakaita 2012 [109]

1-month postpartum

EPDS

1744

233

13.4

0- to 1-month postpartum

EPDS

1744

233

13.4

3- to 6-month postpartum

EPDS

2364

286

12.1

Nakamura 2015 [12]

1-month postpartum

EPDS

215

19

8.8

0- to 1-month postpartum

EPDS

215

19

8.8

Nakano 2004 [110]

0- to 1-month postpartum

EPDS

169

29

17.2

Ngoma 2012 [111]

1-month postpartum

EPDS

117

7

6.0

0- to 1-month postpartum

EPDS

117

7

6.0

Nishigori 2015 [113]

0- to 1-month postpartum

EPDS

300

45

15.0

Nishihira 2011 [114]

1-month postpartum

EPDS

179

24

13.4

0- to 1-month postpartum

EPDS

179

24

13.4

1- to 3-month postpartum

EPDS

100

13

13.0

Nishikawa 2006 [115]

0- to 1-month postpartum

EPDS

248

37

14.9

1-month postpartum

EPDS

248

37

14.9

Nishimura 2010 [117]

1-month postpartum

EPDS

178

50

28.1

0- to 1-month postpartum

EPDS

178

50

28.1

Nishimura 2015 [116]

3- to 6-month postpartum

EPDS

807

83

10.3

Nishioka 2011 [118]

1-month postpartum

EPDS

405

79

19.5

0- to 1-month postpartum

EPDS

405

79

19.5

3- to 6-month postpartum

EPDS

653

53

8.1

Nishizono-Maher 2004 [119]

3- to 6-month postpartum

EPDS

693

96

13.9

Ogasawara 2000 [120]

1-month postpartum

EPDS

161

7

4.3

0- to 1-month postpartum

EPDS

161

7

4.3

Ono 2008 [122]

1-month postpartum

EPDS

151

33

21.9

0- to 1-month postpartum

EPDS

151

33

21.9

Ono 2009 [122]

3- to 6-month postpartum

EPDS

485

99

20.4

Otake 2014 [123]

Third trimester

EPDS

154

9

5.8

Sadatomi 2011 [124]

1-month postpartum

EPDS

201

19

9.5

0- to 1-month postpartum

EPDS

201

19

9.5

Sakae 2016 [125]

1-month postpartum

EPDS

110

25

22.7

0- to 1-month postpartum

EPDS

110

16

14.5

1- to 3-month postpartum

EPDS

110

17

15.5

3- to 6-month postpartum

EPDS

110

15

13.6

6- to 12-month postpartum

EPDS

110

18

16.4

Third trimester

EPDS

110

19

17.3

Sasaki 2007 [127]

0- to 1-month postpartum

EPDS

314

41

13.1

Sasaki 2012 [126]

1-month postpartum

EPDS

314

49

15.6

0- to 1-month postpartum

EPDS

314

49

15.6

Sato 2002 [130]

1-month postpartum

EPDS

402

59

14.7

0- to 1-month postpartum

EPDS

402

84

20.9

Sato 2006 [128]

1-month postpartum

EPDS

189

32

16.9

0- to 1-month postpartum

EPDS

189

37

19.6

1- to 3-month postpartum

EPDS

189

27

14.3

0- to 1-month postpartum

EPDS

103

13

12.6

Sato 2016 [129]

6- to 12-month postpartum

EPDS

677

145

21.4

Satoh 2009 [131]

3- to 6-month postpartum

EPDS

177

42

23.7

Seki 2015 [132]

1- to 3-month postpartum

EPDS

336

71

21.1

Shin 2015 [133]

1- to 3-month postpartum

EPDS

167

18

10.8

Shiraishi 2015 [134]

Second trimester

EPDS

329

19

5.8

Shoji 2009 [135]

1-month postpartum

EPDS

147

7

4.8

0- to 1-month postpartum

EPDS

147

14

9.5

Suetsugu 2015 [136]

1-month postpartum

EPDS

244

19

7.8

0- to 1-month postpartum

EPDS

244

19

7.8

Sugimoto 2017 [137]

3- to 6-month postpartum

EPDS

2133

262

12.3

Sugishita 2013 [138]

1-month postpartum

EPDS

121

24

19.8

0- to 1-month postpartum

EPDS

121

24

19.8

Suzuki 2001 [139]

1-month postpartum

EPDS

1864

275

14.8

0- to 1-month postpartum

EPDS

1864

275

14.8

Suzuki 2010 [140]

0- to 1-month postpartum

EPDS

684

38

5.6

Suzumiya 2004 [141]

0- to 1-month postpartum

EPDS

780

150

19.2

1- to 3-month postpartum

EPDS

2334

296

12.7

3- to 6-month postpartum

EPDS

256

23

9.0

Tachibana 2015 [142]

1-month postpartum

EPDS

1327

169

12.7

0- to 1-month postpartum

EPDS

1327

169

12.7

Second trimester

EPDS

1327

128

9.6

Takahashi 2014 [143]

1-month postpartum

EPDS

100

10

10.0

0- to 1-month postpartum

EPDS

100

10

10.0

Takehara 2009 [144]

3- to 6-month postpartum

EPDS

816

96

11.8

6- to 12-month postpartum

EPDS

684

65

9.5

Takehara 2018 [145]

1- to 3-month postpartum

EPDS

1305

115

8.8

Tamaki 1997 [149]

1-month postpartum

EPDS

627

114

18.2

0- to 1-month postpartum

EPDS

627

114

18.2

1- to 3-month postpartum

EPDS

627

76

12.1

Tamaki 1997 [148]

3- to 6-month postpartum

EPDS

2476

292

11.8

Tamaki 2007 [146]

3- to 6-month postpartum

EPDS

329

61

18.5

Tamaki 2008 [147]

1-month postpartum

EPDS

361

66

18.3

0- to 1-month postpartum

EPDS

361

66

18.3

Tomari 2012 [150]

0- to 1-month postpartum

EPDS

366

53

14.5

Tomimori 2011 [151]

1-month postpartum

EPDS

271

43

15.9

0- to 1-month postpartum

EPDS

198

32

16.2

Umezaki 2015 [152]

1-month postpartum

EPDS

114

36

31.6

0- to 1-month postpartum

EPDS

114

38

33.3

Urayama 2013 [153]

1-month postpartum

EPDS

101

18

17.8

0- to 1-month postpartum

EPDS

101

33

32.7

Usuda 2016 [154]

1-month postpartum

EPDS

118

11

9.3

0- to 1-month postpartum

EPDS

118

11

9.3

Usuda 2017 [29]

Second trimester

EPDS

2821

411

14.6

Usui 2013 [155]

1-month postpartum

CES-D

142

41

28.9

0- to 1-month postpartum

CES-D

142

41

28.9

Third trimester

CES-D

142

39

27.5

Yamaguchi 2016 [156]

1-month postpartum

EPDS

101

14

13.9

0- to 1-month postpartum

EPDS

101

20

19.8

1- to 3-month postpartum

EPDS

101

9

8.9

3- to 6-month postpartum

EPDS

101

13

12.9

Yamanaka 2012 [157]

1- to 3-month postpartum

EPDS

786

81

10.3

Yamaoka 2016 [158]

3- to 6-month postpartum

EPDS

6534

623

9.5

Yamazaki 2016 [161]

0- to 1-month postpartum

EPDS

363

67

18.5

Yamazaki 2017 [160]

0- to 1-month postpartum

EPDS

105

34

32.4

Yamasaki 2017 [159]

3- to 6-month postpartum

CES-D

399

40

10.0

Yoshida 2017 [162]

0- to 1-month postpartum

EPDS

276

38

13.8