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Table 1 Baseline characteristics and summary of included studies

From: Efficacy of selenium on patients undergoing cardiac surgery: a meta-analysis of randomized controlled trials

study

Type study

Sample size

Age (years), Mean (SD)

Sex (male/female)

Weight (kg), Mean (SD)

Height (cm), Mean (SD)

Se

placebo

Se

placebo

Se

placebo

Se

placebo

Se

placebo

Shahram Amini 2018 [2]

RCT

66

71

58.21(10.54)

58.72(8.57)

NA

NA

74.93(14.01)

72.56(12.48)

166.77(9.03)

165.4(10.12)

Mette M Berger 2008 [9]

RCT

57

56

69( 8)

71(11)

70/43

70/43

75(16)

74( 17)

NA

NA

Tanja Schmidt 2018 [10]

RCT

206

205

66 (11)

68 (10)

150/56

152/53

81 (18)

80 (16)

170 (13)

170 (11)

Christian Stoppe 2023 [3]

RCT

697

697

68.0 (10.0)

68.5 (10.8)

513/184

530/167

NA

NA

NA

NA

Abbas Sedighinejad2016 [4]

RCT

41

40

54.65 (8.46)

58.2 ( 8.29)

20/21

21/19

NA

NA

NA

NA

Abbas Ali Zeraati 2021 [1]

RCT

60

60

51.1(15.2)

54.1(17.4)

NA

NA

NA

NA

NA

NA

Laaf 2022 [11]

RCT

10

10

63.8 (10.9)

61.5 (8.1)

10\0

9\1

NA

NA

NA

NA

study

Body mass index, Mean (SD)

Coronary artery disease (N)

Diabetes (N)

Ejection fraction, Mean (SD)

Doses

Se

placebo

Se

placebo

Se

placebo

Se

placebo

before

after

total

Shahram Amini 2018 [2]

26.92(4.62)

26.54(4.31)

6

3

26

20

53.17(7.06)

50.58(6.42)

0. 5 mg

0.5mg

1.0mg

Mette M Berger 2008 [9]

26.7 (5.3)

26.2 (4.7)

NA

NA

NA

NA

NA

NA

NA

540.4μg,and 270.2μg

1991.4 μg

Tanja Schmidt 2018 [10]

27 (5)

28 (4)

115

122

42

46

55 (17)

54 (18)

NA

4000μg

5000μg

Christian Stoppe 2023 [3]

28.9 (5.3)

28.2 (5.2)

124

108

171

173

55 (7.42)

55 (7.42)

2000 μg/L

2000 μg/L then 1000 μg/L

21,000 μg in 8 days

Abbas Sedighinejad 2016 [4]

27.16 ( 3.03)

27.32 ( 2.37)

NA

NA

NA

NA

47.31( 7.42)

47.87 ( 3.9)

600 μg

NA

NA

Abbas Ali Zeraati 2021 [1]

23.5(4.3)

25.3(3.8)

2.16

4.26

10.74

21.4

NA

NA

500 μg

500 μg

3000 μg

Laaf 2022 [11]

30.0 (3.9)

29.8 (6.9)

3

4

NA

NA

18 (5.2)

21 (6.5)

300mcg

3000mcg then 1000mcg

18000mcg

  1. Se Selenium, NA Not available, RCT Randomized controlled trial