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Table 1 The characteristics and evaluation index of the included studies

From: Survival after lobectomy versus sub-lobar resection in elderly with stage I NSCLC: a meta-analysis

Study Year Design Country Mean age(L/S) Gender(M/F) NO(L/S) NO(W/Se) 5-y Survival %(L/S) Assessment
Score
Okami [26] 2010 OC Japan 77/78 84/59 79/54 21/33 74.3/67.6 20
Richard [20] 2013 OC UK 72/70 NR 375/158 158/0 58.7/55.1 18
Zhang [42] 2012 OC China 83.6 39/13 32/20 16/4 21.5/18.7 17
Lin [41] 2013 OC China 73/74 29/18 33/14 14/0 NR 19
Andrea [30] 2013 OC Italy 78.1 257/62 202/71 NR 40.0/38.0 15
Liu [4] 2014 OC China ≥70 96/71 122/45 NR 63.4/60.9 14
  1. OC Observational cohort, L Lobectomy, S Sub-Lobar Resection, NR Not reported, W Wedge resection, Se Segmentectomy, M Male, F Female