Updated experiences with minimally invasive McKeown esophagectomy for esophageal cancer

Figure 2 Learning curve of total minimally invasive McKeown esophagectomy of five surgeons. Durations of operation for five surgeons in three periods are as follows: surgeon A (340 ± 57 min vs 395 ± 105 min vs 310 ± 61 min, P = 0.037); surgeon B (413 ± 109 min vs 387 ± 110 min vs 272 ± 58 min, P = 0.002); surgeon C (418 ± 65 min vs 339 ± 116 min vs 367 ± 74 min, P = 0.098); surgeon D (383 ± 105 min vs 359 ± 82 min vs 317 ± 116 min, P = 0.287); and surgeon E (355 ± 123 min vs 337 ± 77 min vs 320 ± 159 min, P = 0.789).