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Table 1 Characteristics of selected studies

From: Global prevalence of chronic fatigue syndrome among long COVID-19 patients: A systematic review and meta-analysis

Author

Y

ear

Region

Study design

Age

Population

Men%

Prevalence%(N)

D.Bierle et al. [23]

2021

USA

Cross sectional

46.5

42

33.3%

74(31)

MAEG.Aly et al. [24]

2021

Egypt

Cross sectional

73.18

115

0%

57.4(66)

N. K. N. Anjana et al. [25]

2021

India

Cohort

41.5

154

37%

3.2(5)

A. Asadi et al. [1]

2021

Iran

Cross sectional

12

58

48%

21(12)

M. Agustin et al. [27]

2021

Germany

Cohort

43

353

42.7%

14.2(50)

M. Bell et al. [28]

2021

USA

Cohort

44

303

30%

37.5(113)

S. Bliddal et al. [29]

2021

Denmark

Cross sectional

N/A

445

42.9%

95(423)

B. Blomberg et al. [30]

2021

Norway

Cohort

46

272

49%

90(244)

B. Bouteleux et al. [31]

2021

France

Cross sectional

48

39

44%

77(30)

C. Brackel et al. [32]

2021

Netherlands

Cross sectional

13

89

N/A

87(77)

N. Chopra et al. [33]

2021

India

Cross sectional

34.9

53

53%

22.6(12)

B. cil et al. [34]

2022

Turkey

Cross sectional

50.25

396

50%

56.1(222)

N. Erol et al. [35]

2021

Turkey

Case control

9.16

121

53.71%

60(72)

R. Ganesh et al. [36]

2021

USA

Cross sectional

44

817

38.9%

90.6(739)

F. Gonzalez-Andrade et al. [37]

2021

USA

Cross sectional

39

1366

49.71%

67.3(919)

A. Iqbal et al. [38]

2021

Pakistan

Cross sectional

40.1

158

44.9%

82.9(131)

M. Islam et al. [39]

2021

Bangladesh

Cross sectional

34.7

1002

57.9%

11.5(115)

B. Kayaaslan et al. [40]

2021

Turkey

prospectiv

40.5

1007

54.4%

24.3(244)

C. Lemhofer et al. [41]

2021

Germany

Cross sectional

49.8

365

40.5%

37.5(137)

F.S. Mirfazeli et al. [42]

2021

Iran

Cross sectional

50

95

58%

23(22)

D. Munblit et al. [43]

2021

Russia

Cross sectional

57

1358

49.70%

15.5(211)

G. Nesan et al. [44]

2021

India

Cross sectional

≤ 10-≥60

1354

73%

39.7(538)

G.F. Parisi et al. [45]

2021

Italy

Cross sectional

20->60

267

34.4%

75.6(202)

M. S. Razai et al. [47]

2021

London

Cross sectional

49

41

34%

45(19)

E. Righi et al. [47]

2021

Italy

Cohort

56

417

N/A

11.27(47)

L. Roge et al. [48]

2021

Latvia

Cross sectional

10

236

56%

25.2(59)

J. Seeble et al. [49]

2021

Germany

Cohort

57

96

44.8

53.1(51)

S. Sultana et al. [50]

2021

Bangladesh

Cross sectional

34.8

186

66%

8.1(15)

M. Taquet et al. [51]

2021

UK

Cohort

39.4

106,578

41.6%

6.38(6799)

R. R. taylor et al. [52]

2021

UK

Cross sectional

N/A

675

58%

54.5(368)

R. Titze-de-Almeida et al. [53]

2022

Brazil

Cohort

41.2

236

39%

21.2(50)

B. S. Tomar et al. [54]

2021

India

Cross sectional

53.4

50

76%

74(37)

G. Vanichkachorn et al. [55]

2021

USA

Cohort

45.4

100

32%

80(80)

V. Wanga et al. [56]

2021

USA

Case control

39.9

698

52%

48.4(338)

F. Bai et al. [57]

2021

Italy

Cohort

57

377

63.7%

15.6(59)

S. Naik et al. [58]

2021

India

Cross sectional

41.6

1234

69.4%

5.5(68)

N. Yaksi et al. [59]

2022

Turkey

Cohort

65.7

133

51.8%

45.9(61)

L. Simani et al. [60]

2021

Iran

Cross sectional

54.62

120

66.7%

17.5(21)

M. Van Herck et al. [61]

2021

Netherlands

Cross sectional

50

239

17.2%

85.4(204)

J. Bungenberg et al. [62]

2022

Germany

Cross sectional

50.5

50

44%

66(33)

F. Zhou et al. [63]

2020

China

Cohort

56

191

62%

23(44)

S. Mandal et al. [64]

2020

London

Cross sectional

59.9

384

62%

69(265)

C. Fernandez-de-las-Penas et al. [65]

2021

Spain

Cohort

61

1142

52.5%

61(695)

Q. Xiong et al. [66]

2020

China

cross-sectional cohort

20–80

538

45.5%

28.6(144)

KB. Jacobson et al. [67]

2021

USA

Cross sectional

43.3

118

53.4%

30.8(36)

W. Shendy et al. [68]

2021

Egypt

Cross sectional

34.03

81

32%

64.2(52)

J. A. Gonzalez-Hermosillo et al. [69]

2021

Mexico

Cohort

51

130

65.4%

53(69)

S. J. Halpin et al. [70]

2020

UK

Cross sectional

70.5

68

51.5%

14.7(10)

D. Liu et al. [71]

2020

Netherlands

Cross sectional

43

149

45%

26.2(38)

L. Tabacof [72]

2020

USA

Cross sectional

44

84

31%

92(77)

L. G. Jacobs et al. [73]

2020

USA

Cross sectional

57

183

61.5%

83.2(149)

S. Zou et al. [74]

2020

China

Cross sectional

62.8

1063

32.6%

47.1(501)