Table 1 Basic characteristics of the included studies
ID | Location | Enrolment Year | Total No | No. of segmentectomy | TNM stage | Approach | Wedge resection included | Involved lobe | Follow-up (month) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
Upper | Middle | Lower | |||||||||
Kim 2015 [3] | Korea | 2003–2012 | 300 | 73 | I–IV | VATS | yes | NM | 3 and 12 | ||
Zhong 2020 [4] | China | 2014–2016 | 144 | 68 | IA–IB | VATS | no | 35 | 9 | 24 | 6 |
37 | 11 | 28 | |||||||||
Nomori 2018 [5] | Japan | 2013–2016 | 206 | 103 | NM | VATS + open | no | 57 | 0 | 46 | 6 |
57 | 0 | 46 | |||||||||
Takizawa 1999 [6] | Japan | 1993–1996 | 80 | 40 | IA | open | no | 25 | 0 | 15 | 12 |
28 | 0 | 12 | |||||||||
Tane 2019 [7] | Japan | 2012–2017 | 148 | 74 | IA1–IA2 | VATS | no | 45 | 0 | 29 | 6 |
45 | 0 | 29 | |||||||||
Helminen 2020 [1] | Japan | 2007–2019 | 215 | 105 | I–III | VATS | no | NM | NM | ||
Gu 2018 [8] | China | 2011–2014 | 109 | 34 | IA | VATS | yes | 23 | 0 | 11 | 6 |
50 | 0 | 25 | |||||||||
Kobayashi 2017 [9] | Japan | 2001–2009 | 346 | 118 | I–III | VATS + open | no | NM | 12 & 60 | ||
Keenan 2004 [10] | USA | 1996–2001 | 201 | 54 | IA | NM | no | 23 | 0 | 31 | 12 |
87 | 17 | 43 | |||||||||
Kashiwabara 2009 [11] | Japan | 2000–2006 | 118 | 71 | I | NM | no | 38 | 0 | 33 | 6 |
32 | 0 | 15 | |||||||||
Macke 2015 [12] | USA | 1996–2001 | 159 | 77 | I | VATS + open | no | 36 | 9 | 32 | 6–36 |
48 | 0 | 34 | |||||||||
Saito 2014 [13] | Japan | 2006–2012 | 178 | 52 | I | open | no | 30 | 0 | 22 | 6 |
71 | 6 | 49 | |||||||||
Yoshimoto 2010 [14] | Japan | 2005–2008 | 20 | 13 | NM | NM | no | 13 | 0 | 0 | 5 |
7 | 0 | 0 | |||||||||
Hwang 2015 [15] | Korea | 2005–2013 | 188 | 94 | I–IV | VATS | no | NM | NM | ||