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Table 2 Summary of Clinicopathological characteristics of the eligible studies

From: Survival benefits of neoadjuvant chemo(radio)therapy versus surgery first in patients with resectable or borderline resectable pancreatic cancer: a systematic review and meta-analysis

Study

Patients factor

Tumor factor

AT, %

Matched factora

No. of participants (female, %)

Age, mean (SD), y

Size, mean (SD), cm

Site (head, %)

VR, %

CA19-9, mean (SD), U/ml

Barbier et al. [23]

NAT: 88

SF:85

65 (39–81)g

64 (37–79)

NA

100

100

16

30

> 350 (16)b

> 350 (15)

0

NA

1, 4, 5, 6

Papalezova et al. [24]

NAT: 144 (46)

SF: 92 (47)

64 (12)

65 (12)

2.5 (1.2)

2.1 (1.3)

100

100

18

22

NA

33

66

1, 2, 4, 5

Tajima et al. [25]

NAT: 13 (46)

SF: 21 (33)

63 (51–77)g

66 (52–80)

NA

69

52

100

100

NA

NA

1, 2, 4, 5

Cho et al. [26]

NAT: 30 (47)

SF: 21 (52)

59.57 (8.6)

60.76 (10.8)

2.6 (0.9)

2.6 (0.8)

87

86

43

38

1189 (2482)

540 (840)

50

62

1, 2, 3, 4, 5, 6, 7

Jiang et al. [27]

NAT: 112 (33)

SF: 120 (43)

45.9 (9.8)

45.5 (9.3)

NA

88

80

NA

211 (46)

284 (56)

0

0

1, 2, 4, 6, 7

Patel et al. [28]

NAT: 17 (47)

SF: 13 (31)

60 (39–72)g

71 (42–82)

NA

88

85

NA

NA

82

77

1, 2, 4, 7

Roland et al. [30]

NAT: 222 (44)

SF: 85 (40)

64 (35–86)g

64 (40–85)

NA

92

87

31

27

< 1000 (74)b

< 1000 (66)

11

68

1, 2, 4, 5, 6

Lee et al. [29]

NAT: 30 (60)

SF: 28 (50)

61.7 (8.8)

62.9 (9.6)

2.7(0.7)

2.6(0.7)

90

96

70

29

816 (1452)

504 (830)

73

75

1, 2, 3, 6, 7

Sho et al. [31]c

NAT: 85 (45)

SF: 99 (47)

65.7 (8.9)

68.9 (10)

NA

NA

NA

NA

61

48

2, 7

Golcher et al. [36]

NAT: 33 (45)

SF: 33 (48)

62.5 (33–76)

65.1 (46–73)

NA

100

100

NA

22

NA

37

30

1, 2, 4, 7

Hirono et al. [32]

NAT: 46

SF: 124

69 (41–90)g

3 (1.1–7.1)g

2.9 (1.2–8.5)

43

56

60

42

NA

53

64

3, 4, 5, 7

Masui et al. [33]

NAT: 18 (56)

SF: 19 (68)

63 (43–73)g

66 (56–80)

3.3 (1.8–5)g

3.2 (1.7–7.5)

72

68

47

37

102

217

78

84

1, 2, 3, 4, 5, 6, 7

Ielpo et al. [3]d

NAT: 45 (36)

SF: 36 (42)

62 (42–81)f

64 (46–78)

7.5

6.8

71

58

35

36

1754

1621

61

58

1, 2, 3, 4, 5, 6, 7

Murakami et al

NAT: 52 (33)

SF: 25 (28)

> 67 (48)b

> 67 (60)

≥ 37 (52)b

≥ 37 (34)

67

84

62

57

> 150 (52)b

> 150 (52)

80

48

1, 2, 4, 6

Fujii et al. [34]e

NAT: 40 (48)

SF: 233 (37)

65 (36–79)g

67 (35–88)

2.9 (1.5–5.2)g

2.5 (0.8–5.6)

100

100

25

32

143

148

67

66

1,2,3,4,5,6,7

NAT: 27 (56)

SF: 102 (48)

68 (47–78)g

66 (39–83)

3 (1.8–3.9)g

3.3 (1.5–7)

100

100

96

95

323

259

39

44

1, 2, 3, 4, 5, 6, 7

NAT: 21 (52)

SF: 81 (37)

68 (47–76)g

65 (42–82)

3.5 (2.6–4.6)g

3 (2–6)

100

100

79

87

286

218

46

43

1, 2, 3, 4, 5, 6, 7

Jang et al. [9]

NAT: 27 (37)

SF: 23 (35)

59.4 (8.4)

58.9 (11.3)

3.4 (0.8)

3.5 (0.9)

85

74

35

28

1042 (2465)

1258 (2540)

52

57

1, 2, 3, 4, 5, 6, 7

Reni et al. [12]

NAT: 32 (22)

SF: 26 (46)

64 (39–75)g

65 (37–74)

2.0 (0–6.0)g

2.5 (1.5–5.0)

88

96

0

9

173 (43–4510)

179 (39–3337)

72

65

1, 2, 3, 4, 5, 6, 7

  1. Abbreviations: NAT neoadjuvant therapy, SF surgery first, AT adjuvant therapy, VR vascular resection, NA not available
  2. aFactors matched with NAT and SF: 1, age; 2, sex; 3, initial tumor size; 4, tumor location; 5, vascular resection; 6, initial CA19-9 level; 7, AT
  3. bReported as range (percentage, %)
  4. cThe study by Sho et al. has 2 independent data sets (1 data set for RPC and 1 data set for BRPC)
  5. dThe study by lelpo et al. has 1 data set for RPC/BRPC, but it has 2 data subsets (1 data subset for RPC and 1 data subset for BRPC)
  6. eThe study by Fujii et al. has 3 independent data sets (1 data set for RPC, 1 data set for BRPC, and 1 data set for RPC/BRPC)
  7. fReported as mean (range)
  8. gReported as median (range)