Table 6 Surgical outcomes of LG and OG

 Huang et al. [14]

131.91^a

342.3

266.05^a

223.78

25.81

27.47

 Cai et al. [15]

293.67

344.47

270.51

187.66

22.98

22.87

 Scatizzi et al. [16]

NA

NA

240^a

180

31

37

 Zhao et al. [18]

128^a

301

211

204

33.2

32.8

 Chen et al. [19]

82.7^a

201.7

207.2

213

30.6

30.3

 Chun et al. [20]

NA

NA

207.7^a

159.9

39.1

39.3

 Hamabe et al. [21]

158.3^a

356.3

283.1^a

225.9

63.7^a

44

 Kim et al. [22]

NA

NA

228.3^a

183.6

38.3

41.8

 Bo et al. [24]

196.9^a

358.2

292.8^a

242.1

35.2

37.4

 Gordon et al. [25]

107^a

495

291^a

235

35.92

36.59

 Lin et al. [26]

78.4^a

200.4

212.7

226.4

30.2

28

 Shinohara et al. [27]

154.3^a

388.7

369.7^a

263.6

45.3

43.8

 Qiu et al. [29]

120^a

227.3

259.5^a

236.09

30.2

28.1

 Cui et al. [30]

99^a

125

258^a

194

29.3

30.1

 Wu et al. [31]

169.46^a

193. 86

228.43^a

207.59

19.84^a

18.04

 Hao et al. [33]

154.5^a

311.2

257.8^a

231

30.4

28.1

 Hu et al. [34]

105.5^a

117.3

217.3^a

186

36.1

36.9

 Li1 et al. [35]

131.9

129.5

297.4^a

198.1

33.7

33.1

 Li2 et al. [35]

94

97.9

214.2^a

200.3

24.7

24.6

 Lu et al. [37]

250^a

330

240^a

190

18

19

 Xu1 et al. [39]

322

274

326^a

203

24

25.6

 Zhang et al. [40]

143^a

223

189

201

37

35

 Inokuchi et al. [41]

115^a

420

316^a

242

39

38

 Park et al. [43]

NA

NA

257.4^a

183

37

39.7

 Shi et al. [44]

129^a

215.8

238.1^a

207.3

31.59

32.18

 Xu2 et al. [49]

273.7^a

233.6

283.8^a

191.5

21.6

22.4

 Chan et al. [45]

150^a

275

321^a

365

39.5

37.5

 Lee et al. [47]

138.3^a

222

225.7^a

162.3

46.6

46.9

 Wang et al. [48]

91.4^a

117.5

242.5^a

209.9

29.5

31.4