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Table 2 Clinicopathologic characteristics of included studies (continued)

From: Surgical treatment to multiple primary lung cancer patients: a systematic review and meta-analysis

Study (Year)

Location

Staging Criteria

TNM Stage

pN

Histology

Ipsilateral

Contralateral

I

II

pN0

pN1 + pN2

Identical

Different

ADK

SCC

Van Rens (2000) [11]

42 (49.4%)

43 (50.6%)

1997

40

29

NA

NA

50 (68.5%)

23 (31.5%)

30 (35.4%)

49 (57.6%)

Doddoli (2001) [12]

17 (44.7%)

21 (55.3%)

1997

27

4

NA

NA

23 (61.0%)

15 (39.0%)

28 (30.0%)

37 (49.0%)

Trousse (2007) [13]

91 (72.8%)

34 (27.2%)

1997

NA

NA

44

54

104 (83.2%)

21 (16.8%)

64 (51.2%)

36 (28.8%)

De Leyn (2008) [14]

0 (0.0%)

36 (100.0%)

1997

34

24

11 + 1

18 (50.0%)

18 (50.0%)

23 (31.9%)

38 (52.8%)

Riquet (2008) [15]

156 (66.7%)

78 (33.3%)

1997

75

20

144

31 + 59

135 (57.9%)

98 (42.1%)

109 (46.6%)

80 (34.2%)

Lee (2009) [16]

17 (29.0%)

41 (71.0%)

NA

56

1

NA

NA

42 (72.0%)

12 (21.0%)

95 (82.0%)

11 (9.0%)

Voltolini (2010) [17]

15 (35.0%)

28 (65.0%)

1997

8

28

25

9 + 9

27 (63.0%)

16 (37.0%)

28 (65.0%)

15 (25.0%)

Hamaji (2013) [18]

48 (29.8%)

113 (70.2%)

2002 & 2007

124

16

NA

NA

123 (76.4%)

38 (23.6%)

203 (63.0%)

75 (23.3%)

Ishikawa (2014) [19]

67 (72.0%)

26 (28.0%)

7th

75

9

75

10 + 8

93 (100.0%)

0 (0.0%)

93 (100.0%)

0 (0.0%)

Xiao (2017) [20]

28 (53.9%)

24 (46.2%)

7th

27

24

36

16 + 0

20 (38.5%)

32 (61.5%)

70 (66.0%)

34 (32.1%)

  1. Notes: NA Not available, ADK Adenocarcinoma, SCC Squamous cell carcinoma