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Table 1 Study characteristics and demographics

From: Zero-profile implant versus conventional cage–plate construct in anterior cervical discectomy and fusion for the treatment of single-level degenerative cervical spondylosis: a systematic review and meta-analysis

References

Year

Study design

Sample size

Mean age

Operation Time (min)

Blood Loss (mL)

Zero-p

CPC

Zero-p

CPC

Zero-p

CPC

Zero-p

CPC

Lan et al. [7]

2017

R OS

35

33

54.05 ± 10.11

52.09 ± 10.46

101.57 ± 14.36

107.88 ± 14.35

93.4 ± 9.04

97.94 ± 10.76

Vaishnav et al. [8]

2018

R OS

41

23

48.58 ± 10.72

46.37 ± 8.4

44.88 ± 6.54

54.43 ± 14.71

27.32 ± 9.23

30.68 ± 13.21

Wei et al. [11]

2022

R OS

68

28

48.7 ± 7.3

47.2 ± 6.7

55.24 ± 5.17

53.16 ± 5.29

34.52 ± 6.42

32.46 ± 8.31

He et al. [16]

2021

R OS

42

45

62.59 ± 8.21

61.15 ± 7.52

84 ± 23

98 ± 27

139 ± 22

154 ± 33

Noh et al. [17]

2021

R OS

38

42

51.9 ± 10.21

52.6 ± 8.61

108.31 ± 17.15

123.25 ± 28.23

72.39 ± 13.11

92.12 ± 38.65

Lee et al. [18]

2015

R OS

23

18

57.26 ± 13.28

52.89 ± 7.71

NS

NS

NS

NS

Son et al. [19]

2014

R OS

21

27

55.4 ± 9.7

50.2 ± 10.9

159.5 ± 52.1

147.4 ± 48.4

90 ± 148

146.5 ± 138.0

Nemoto et al. [20]

2015

P RCT

24

22

40.9 ± 7.2

41.6 ± 7.0

116.4 ± 17.1

128.5 ± 17.4

NS

NS

Wang et al. [21]

2014

R OS

22

25

50.86 ± 8.79

53.68 ± 8.96

98.18 ± 15.55

105.4 ± 14.43

87.95 ± 12.02

92.4 ± 11.28

Li et al. [22]

2015

P RCT

23

23

NS

NS

NS

NS

NS

NS

Wang et al. [23]

2015

R OS

27

30

51.6 ± 11.3

54 ± 8.5

98.2 ± 15.2

109.8 ± 16.9

88.2 ± 12.9

95.2 ± 11.6

Yan et al. [24]

2014

R OS

37

35

63.55 ± 7.12

64.28 ± 8.76

76.59 ± 14.53

53.78 ± 17.91

52.74 ± 26.84

85.46 ± 23.97

Li et al. [25]

2020

R OS

24

27

65.7 ± 7.5

62.3 ± 3.4

NS

NS

NS

NS

Liu et al. [26]

2016

P RCT

31

31

48.5 ± 9.1

45.2 ± 10.6

63.45 ± 10.87

85.97 ± 12.04

44.35 ± 11.53

66.26 ± 19.62

Shao et al. [27]

2016

R OS

63

76

47.6 ± 6.4

50.3 ± 8.2

63.7 ± 12.5

71.8 ± 13.2

83.6 ± 14.5

86.1 ± 14.3

Yi et al. [28]

2017

R OS

80

84

52.12 ± 5.893

51.95 ± 6.267

148.46 ± 27.239

165.37 ± 28.538

76.87 ± 21.38

80.46 ± 31.409

Wang et al. [29]

2016

R OS

12

16

50.5 ± 13.5

52.0 ± 12.0

113 ± 8.6

160.44 ± 17.2

51.67 ± 24.2

52.13 ± 24.54

Guo et al. [30]

2015

P RCT

49

49

43.1 ± 16.9

43.3 ± 17.7

70.8 ± 17.3

87.6 ± 23.4

49.5 ± 17.2

65.2 ± 25.3

Sun et al. [31]

2017

R OS

25

28

53 ± 10.26

53.57 ± 10.66

88.88 ± 25.8

109.2 ± 20.4

83.22 ± 33.24

117.33 ± 23.57

Hu et al. [32]

2017

R OS

23

31

49.78 ± 10.4

45.54 ± 40.22

78.22 ± 14.01

82.19 ± 6.51

19.52 ± 6.95

37.16 ± 5.25

Sha et al. [33]

2021

R OS

30

31

52.9 ± 9.27

50.33 ± 8.57

81.33 ± 10.74

93.67 ± 11.59

77.33 ± 22.43

108.33 ± 24.08

Chang et al. [9]

2017

R OS

21

24

54.6 ± 3.5

53.2 ± 4.2

62.7 ± 17.3

87.6 ± 23.2

78.4 ± 29.6

80.2 ± 36.8

Ruan et al. [34]

2018

R OS

21

18

56.3 ± 9.8

59.6 ± 12.5

68.6 ± 8.2

79.7 ± 9.3

41.2 ± 7.4

78.9 ± 9.2

Zhu et al. [35]

2019

R OS

19

26

55.42 ± 8.03

59.15 ± 8.04

129 ± 25

172 ± 29

88 ± 29

151 ± 33

Zhang et al. [36]

2020

R OS

56

67

45.2 ± 13.9

48.7 ± 13.2

76.96 ± 8.98

82.31 ± 7.57

51.64 ± 20.35

57.97 ± 17.9

Gou et al. [10]

2022

R OS

16

16

48.5 ± 6.7

52.4 ± 7.2

75.1 ± 6.0

90.6 ± 8.1

61.9 ± 9.9

60.3 ± 12.6

Luo et al. [37]

2021

R OS

60

60

59.1 ± 16.4

59.8 ± 14.4

75.22 ± 7.57

90.39 ± 8.1

77.53 ± 37.27

72.24 ± 34.74

  1. R, retrospective; P, prospective; OS, observational; RCT, randomized controlled trial; and NS, not specified