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Table 1 Baseline characteristics of the included studies. MIE: Minimally invasive esophagectomy; VATS: Video-assisted thoracoscopic surgery; SCC: Squamous cell carcinoma; CRT: Chemoradiotherapy; R: Retrospective; P: Prospective; NI: Not informed; SMM: Skeletal muscle mass; SMI: Skeletal muscle mass index; BMI: Body mass index; PMI: Psoas muscle index; MMI: Masseter mass index; BIA: Bioelectrical impedance analysis; HGS: Hand grip strength; CT: Computed tomography; TPA: Total psoas area

From: The impact of sarcopenia on esophagectomy for cancer: a systematic review and meta-analysis

Author - year

N

Age (years)

Design

Male

Follow-up

MIE, hybrid, or VATS

SCC

Neoadj. CRT

Stage III/IV

Method

Sarcopenia definition

           

Men

Women

NAMBARA M − 2021

73

65.3

R

0.53

NI

0.88

NI

0.68

0.52

BIA

SMM < 90%

FEHRENBACH U − 2021

85

64.3

R

0.88

24

0.91

0

0.21

0.67

CT L3

SMI ≤ 52.4 cm2/m2

SMI ≤ 38.5 cm2/m2

UEMURA S − 2021

121

65

R

0.83

36

0.99

NI

0.3

NI

CT L3

PMI < 6 cm2/m2, BMI < 18.5 kg/m2

WAKEFILED CJ − 2021

52

65

R

0.87

24.9

0.23

0.17

NI

0.15

CT L3

SMI: < 43 cm2/m2 (BMI < 25), 53 cm2/m2 (BMI ≥ 25)

SMI < 41 cm2/m2

MAYANAGI S − 2020

187

62.8

R

0.8

0.5

0.87

0.90

0.43

0.36

CT L3

PMI < 6.36 cm2/m2

PMI < 3.92 cm2/m2

WANG PY − 2020

152

64.6

P

0.67

3

1

0.93

0.40

0.61

NI

Low appendicular skeletal muscle mass index < 7 kg/m2

Low appendicular skeletal muscle mass index < 5.7 kg/m2

MAEDA N − 2020

72

66

R

0.9

NI

0.69

1

0.01

0.5

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

SAKAI M − 2021

89

64.1

R

0.87

60

NI

0.93

0

0.48

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

KAWAKITA Y − 2020

113

64.2

R

0.85

3

1

1

1

NI

CT L3

PMI < 3.85 cm2/m2

PMI < 2.42 cm2/m2

SRPCIC M − 2020

139

63.9

P

0.84

18.1

0.37

0.46

0.53

0.44

CT L3

SMI < 43.1 cm2/m2

SMI < 32.7 cm2/m2

MENEZES TM − 2020

26

58

P

0.65

NI

0.69

NI

1

0.42

CT L3

MMI 43 cm2/m2 (BMI < 25), 53 cm2/m2 (BMI ≥ 25). PTA < 545 mm2/m2

MMI 41 cm2/m2. PTA < 285 mm2/m2

ISHIDA T − 2019

165

65.9

R

0.87

NI

0.25

NI

1

0.70

CT L3

PMI < 6.36 cm2/m2

PMI < 3.92 cm2/m2

KAMITANI N − 2019

90

66.2

R

0.86

20.8

NI

1

1

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

OGUMA J − 2019

194

64

R

0.88

38

0.27

1

0

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

XU J − 2019

141

59.6

R

0.79

12

1

1

0

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

YASSAIE SS − 2019

53

64.5

R

0.92

NI

0

1

1

0.49

CT L4

> 4% loss of TPA

SOMA D − 2019

102

68

R

0.87

NI

0.63

1

0.24

0.58

CT L3

SMI < 43 cm2/m2 (BMI < 25 kg/m2), < 53 cm2/m2 (BMI > 25 kg/m2)

SMI < 41cm2/m2

MATSUNAGA T − 2019

163

65

R

0.78

27

NI

0.94

0.07

0.36

NI

SMM < lower limit of standard SMM (< 90% of the standard)

NAGATA K − 2018

123

70

R

0.85

60

0.67

1

NI

0.39

CT L3

PMI < 4.24 cm2/m2

PMI < 2.50 cm2/m2

NAKASHIMA Y − 2018

341

NI

R

0.85

60

NI

0.95

0.52

0.47

CT L3

SMI < 47.24 cm2/m2

SMI < 36.92 cm2/m2

JARVINEN T − 2018

115

63

R

0.75

24

0.77

0.23

1

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

MAKIURA D − 2018

98

65.6

R

0.85

24

0.93

NI

0.72

0.49

NI

Low muscle mass (< 7.0 kg/m2) plus low muscle strength (< 26 kg) and/or low physical performance (< 0.8 m/s)

Low muscle mass (< 5.7 kg/m2) plus low muscle strength (< 18 kg) and/or low physical performance (< 0.8 m/s)

ELLIOTT JA − 2017

192

61.6

P

0.82

26

NI

0.20

1

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

KUDOU K − 2017

148

64.9

R

0.72

60

0.06

0

NI

NI

CT L3

SMI < 43 cm2/m2 (BMI < 25 kg/m2), < 53 cm2/m2 (BMI > 25 kg/m2)

SMI < 41 cm2/m2

PAIREDER M − 2017

130

62.8

R

0.82

21.2

NI

0.33

0.05

NI

CT L3

SMI ≤ 55 cm2/m2

SMI ≤ 39 cm2/m2

GROTENHUIS BA − 2016

120

61.8

R

0.74

20

0

0.26

1

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

MAKIURA D − 2016

104

65.4

R

0.85

NI

NI

0.94

0.78

0.44

BIA + HGS

Low muscle mass (< 7.0 kg/m2) plus low muscle strength (< 26 kg) and/or low physical performance (< 0.8 m/s)

Low muscle mass (< 5,7 kg/m2) plus low muscle strength (< 18 kg) and/or low physical performance (< 0.8 m/s)

NISHIGORI T − 2016

199

65.3

R

0.82

NI

0.94

1

0.58

0.34

CT L3

SMI < 52.4cm2/m2

SMI < 38.5 cm2/m2

TAMANDL D − 2016

200

64

R

0.75

35.1

NI

0.3

0.65

NI

CT L3

SMI ≤ 55cm2/m2

SMI ≤ 39 cm2/m2

HARADA K − 2016

256

NI

R

0.92

49.6

0.05

1

0.41

0.59

CT L3

SMI < 44.5 cm2/m2

SMI < 36.5 cm2/m2

IDA S − 2015

138

65.2

P

0.88

NI

NI

1

0.11

0.25

BIA

SMM < 90% of the standard

PANJE CM − 2019

60

61

R

0.93

48

NI

0.18

1

0.72

CT L3

SMI < 43 cm2/m2 (BMI < 25 kg/m2), < 53 cm2/m2 (BMI > 25 kg/m2)

SMI < 41cm2/m2

SIEGAL SR − 2018

173

65.6

R

0.83

27.6

0.95

0.12

0.83

0.47

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

SAEKI H − 2018

157

64

R

0.82

60

NI

1

0.53

0.76

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

MURNANE LC- 2021

108

66

R

0.75

NI

NI

0.11

0.21

NI

CT L3

SMI < 52.4 cm2/m2

SMI < 38.5 cm2/m2

COLCORD ME- 2021

175

67

R

0.86

12

1

0.13

0.84

NI

Hand-grip

< 26 kg

< 16 kg

KAMADA T − 2022

70

68

R

0.93

36

1

0.88

0.06

0.4

Masseter

< 24.3 cm2

< 26.2 cm2

WATANABE A − 2022

135

67

R

0.67

NI

1

NI

0.69

0.43

CT L3

Low muscle mass < 7.0 kg/m2

Low muscle mass < 5.7 kg/m2

KURITA D − 2022

247

65

R

0.81

NI

1

0.66

0

0.51

Hand-grip

< 28 kg

< 18 kg

SUGIMURA K − 2022

363

70

R

0.8

33

NI

NI

0.16

0.35

NI

Low muscle mass < 7.0 kg/m2

Low muscle mass < 5.7 kg/m2