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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)LocationStaging CriteriaTNM StagepNHistology
IpsilateralContralateralIIIpN0pN1 + pN2IdenticalDifferentADKSCC
Van Rens (2000) [11]42 (49.4%)43 (50.6%)19974029NANA50 (68.5%)23 (31.5%)30 (35.4%)49 (57.6%)
Doddoli (2001) [12]17 (44.7%)21 (55.3%)1997274NANA23 (61.0%)15 (39.0%)28 (30.0%)37 (49.0%)
Trousse (2007) [13]91 (72.8%)34 (27.2%)1997NANA4454104 (83.2%)21 (16.8%)64 (51.2%)36 (28.8%)
De Leyn (2008) [14]0 (0.0%)36 (100.0%)1997342411 + 118 (50.0%)18 (50.0%)23 (31.9%)38 (52.8%)
Riquet (2008) [15]156 (66.7%)78 (33.3%)1997752014431 + 59135 (57.9%)98 (42.1%)109 (46.6%)80 (34.2%)
Lee (2009) [16]17 (29.0%)41 (71.0%)NA561NANA42 (72.0%)12 (21.0%)95 (82.0%)11 (9.0%)
Voltolini (2010) [17]15 (35.0%)28 (65.0%)1997828259 + 927 (63.0%)16 (37.0%)28 (65.0%)15 (25.0%)
Hamaji (2013) [18]48 (29.8%)113 (70.2%)2002 & 200712416NANA123 (76.4%)38 (23.6%)203 (63.0%)75 (23.3%)
Ishikawa (2014) [19]67 (72.0%)26 (28.0%)7th7597510 + 893 (100.0%)0 (0.0%)93 (100.0%)0 (0.0%)
Xiao (2017) [20]28 (53.9%)24 (46.2%)7th27243616 + 020 (38.5%)32 (61.5%)70 (66.0%)34 (32.1%)
  1. Notes: NA Not available, ADK Adenocarcinoma, SCC Squamous cell carcinoma