Table 1.

Basic characteristics and demographics of the included studies

First Author	Country	Year of Publication	Study year	Retrospective/ Prospective	Study Type	Patients	Lobe	Seg	TNM8th Stage	NOS score
Al-Ameri [17]	Sweden	2019	2016–2018	Retrospective	No	333	122/211	0/0	Stage I-IV	7
Bourdages-Pageau [15]	Canada	2019	2014–2017	Retrospective	PSM	722	247/247	0/0	T1N0M0	8
Chang [19]	China Taiwan	2016	2012–2014	Retrospective	No	121	26/55	3/2	T1-2N0M0	7
Chung [7]	South Korea	2015	2013–2014	Retrospective	No	150	90/60	0/0	T1-2N0M0	7
Dai [20]	China	2016	2013–2015	Retrospective	PSM	143	63/63	0/0	T1-3N2M0	7
French [21]	Canada	2016	2014–2015	Retrospective	PSM	100	40/42	10/8	T1N0M0	7
Han [22]	South Korea	2016	2006–2015	Retrospective	No	439	167/212	0/0/	Stage I or II	7
Heo [23]	South Korea	2017	2012–2015	Retrospective	PSM	104	32/32	0/0	T1-2N0-2M0	7
Hirai [24]	Japan	2019	2012–2019	Prospective	No	212	142/70	0/0	T1N0M0	7
Li [25]	China	2019	2015–2017	Retrospective	PSM	492	215/232	31/14	NG	8
Lin [14]	China	2016	2013–2014	Retrospective	No	67	21/46	0/0	NG	7
Liu [9]	China Taiwan	2016	2005–2014	Retrospective	No	442	100/342	49/47	NG	7
Liu [26]	China	2019	2015–2016	Prospective	No	328	166/162	0/0	T1N0M0	8
McElnay [8]	UK	2014	2012–2013	Retrospective	No	110	15/95	0/0	NG	7
Mu [16]	China	2015	2014–2015	Prospective	PSM	405	28/21	8/8	Stage I-III	8
Perna [27]	Spain	2016	2015–2016	Prospective	RCT	131	51/55	0/0	T1-2N0M0	8
Shen [28]	China	2016	2013–2014	Retrospective	PSM	396	100/100	0/0	T1-3N0M0	7
Song [29]	South Korea	2017	2011–2016	Retrospective	PSM	73	26/26	0/0	Stage I-III	7
Zhao [30]	China	2019	2013–2015	Retrospective	No	129	73/56	0/0	Stage I	7
Zhu [31]	China	2015	2014 Aug-2014 Oct	Retrospective	No	82	33/49	0/0	Stage I or II	7

NOS score Score of Newcastle Ottawa Scale, RCT randomized controlled trial, PSM propensity matched, Lobe Lobectomy, NG Not given, Seg Segmentectomy, TNM^8th 8th edition of TNM classification of lung cancer