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Table 2 The information of variables for meta-regression subgroup analyses

From: The effects of acupuncture on pregnancy outcomes of in vitro fertilization: a systematic review and meta-analysis

Study

Age (years)

Duration of infertility (years)

Repeated IVF cycles(%)

No. of embryos transferred

Primary infertility(%)

No. of acupuncture sessions

Acupuncture type

Control

Andersen 2010 [65]

31.0

2.5

42.4%

1.39

71%

1

MA

SC

Arnoldi 2010 [18]

  

100%

2.10

 

2

MA

NC

Craig 2014 [59]

33.1

  

2.10

 

1

MA

NC

Dieterle 2006 [15]

34.9

5.4

83.6%a

2.60

80%

2

MA

SC

Domar 2009 [29]

36.1

  

2.51

 

1

MA

NC

Feliciani 2011 [62]

34.9

  

1.84

 

3

MA

NC

Gillerman 2016 [58]

     

3

MA

NC

Ho 2009 [17]

35.0

  

3.56

 

4

EA

NC

Humaidan 2004 [69]

31.0

    

1

EA

NC

Madaschi 2010 [64]

35.0

  

2.15

 

1

MA

NC

Morin 2017 [59]

34.5

  

2.57

 

1

MA

NC

Moy 2011 [61]

33.2

  

2.15

63%

1

MA

SC

Omodei 2010 [19]

35.7

  

2.05

 

1

MA

NC

Paulus 2002 [14]

32.5

  

2.15

 

1

MA

NC

Paulus 2003 [71]

32.6

    

1

MA

SC

Peyvandi 2016 [22]

     

3

EA

NC

Rashidi 2013 [60]

31.6

9.3

 

2.55

76%

4

EA

NC

Sator-K 2006 [68]

33.8

 

77.7%

  

1

EA/MA

SC

Smith 2006 [67]

36.0

2.9

52.2%

 

76%

2

MA

SC

Smith 2018 [56]

35.4

 

70%

1.32

74%

2

MA

SC

So 2009 [66]

36.0

4.0

30.5%

1.89

61%

1

MA

SC

So 2010 [63]

36.0

5.0

 

1.93

38%

1

MA

SC

Stener-Victorin 1999 [72]

33.4

 

60.4%

2.03

 

1

EA

NC

Stener-Victorin 2003 [70]

32.9

 

47.8%

1.92

 

1

EA

NC

Villahermosa 2012 [20]

34.2

4.0

   

4

MA

SC

Villahermosa 2013 [21]

36.2

4.5

100%

2.13

82%

4

MA

SC/OCb

Westergaard 2006 [16]

37.0

3.7

73.6%

2.07

42%

1/2c

MA

NC

  1. Note: MA manual acupuncture, EA electro acupuncture, SC sham control, NC no intervention control
  2. aDieterle 2006 reported clinical pregnancy rates for first, second and more than two IVF cycles, and then we grouped these three arms separately for meta-regression subgroup analyses
  3. bThis trial had two control groups, sham acupuncture group and no intervention control group,and these groups were grouped separately for relevant subgroup analysis
  4. cWestergarrd 2006 had two acupuncture treatment arms, one arm received two sessions and the other arm received three, and these arms were grouped separately for this meta-regression
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BMC Complementary Medicine and Therapies

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