Table 1.
Summary of the 12 studies included in the meta-analysis
| First author | Study type | Region | Research period | Clinical stage | Staging procedures | Surgery | Outcomes reported | Quality score | |
|---|---|---|---|---|---|---|---|---|---|
| VATS segmentectomy | VATS lobectomy | ||||||||
| Hwang [10] | Retrospective | Korea | 2015 | AIS IA IB | CT | 94 | 94 | (1) (2) (3) (5) (6) (8)(9) | 9 |
| Echavarria [11] | Retrospective | USA | 2016 | I | Unknown | 43 | 208 | (3) (4) (5) (6) (7) (8) | 8 |
| Landreneau [12] | Retrospective | Australia | 2014 | IA IB | Unknown | 170 | 170 | (1) (2) | 8 |
| Nakamura [13] | Retrospective | Japan | 2011 | I | Unknown | 38 | 289 | (2) | 7 |
| Roman [14] | Retrospective | UK | 2019 | IA IB | All CT and PET | 40 | 44 | (2) | 8 |
| Shapiro [15] | Retrospective | USA | 2009 | IA IB | All CT and partial PET | 31 | 113 | (1) (2) (3) (6) (7) (8) | 7 |
| Song [16] | Retrospective | Japan | 2018 | IA | All CT and 87.7% PET | 41 | 41 | (1) (3) (4) (5) (6) (7) (8) (9) | 9 |
| Soukiasian [17] | Retrospective | USA | 2012 | IA IB | Unknown | 73 | 266 | (2) (3) (7) | 7 |
| Tsubokawa [18] | Retrospective | Japan | 2018 | IA IB | All CT and PET | 52 | 44 | (1) (2) (3) (4) (9) | 7 |
| Wang [19] | Retrospective | China | 2013 | IA IB | All CT and PET | 5 | 14 | (4) (6) | 7 |
| Yamashita [20] | Retrospective | Japan | 2012 | IA | CT | 90 | 124 | (1) (2) (4) (5) (8) (9) | 8 |
| Zhong [21] | Retrospective | China | 2012 | IA | CT and partial PET | 39 | 81 | (1) (2) (3) (4) (5)(6) (7) (8) (9) | 7 |
Abbreviations: (1) Disease-free survival, (2) overall survival, (3) postoperative complications, (4) perioperative blood loss, (5) operation time, (6) hospital stay, (7) air leak (> 5 days), (8) in-hospital mortality, (9) number of dissected lymph nodes, VATS video-assisted thoracoscopic surgery