Table 2. Operative and postoperative data.
| Variables | Before matching | After matching | |||||
|---|---|---|---|---|---|---|---|
| MIE (n=66) | Open surgery (n=163) | P value | MIE (n=59) | Open surgery (n=59) | P value | ||
| Operative duration (mean ± SD) (min) | 266.5±52.5 | 218.1±47.4 | <0.01 | 262.3±49.2 | 208.2±44.2 | <0.01 | |
| Blood loss (mean ± SD) (mL) | 262.1±165.3 | 239.0±65.5 | 0.27 | 244.1±103.8 | 248.3±68.8 | 0.79 | |
| R0 resection [n (%)] | 64 (97.0) | 153 (93.9) | 0.34 | 57 (96.6) | 54 (91.5) | 0.24 | |
| No. of lymph node dissections (mean ± SD) | 15.2±5.3 | 12.9±7.3 | 0.01 | 16.3±5.7 | 13.2±6.4 | 0.55 | |
| Lymph node sampling of left-RLN [n (%)] | 34 (51.5) | 72 (44.2) | 0.31 | 32 (54.2) | 26 (44.1) | 0.27 | |
| Lymph node sampling of right-RLN [n (%)] | 57 (86.4) | 92 (56.4) | <0.01 | 50 (84.7) | 32 (54.2) | <0.01 | |
| 90-day mortality [n (%)] | 0 | 4 (2.5) | 0.20 | 0 | 3 (5.1) | 0.08 | |
| Length of ICU stay [range] (day) | 3 [0–9] | 4 [0–19] | 0.01 | 4 [0–9] | 4 [0–17] | 0.14 | |
| Length of postoperative stay [range] (day) | 11.5 [6–66] | 14.0 [6–116] | 0.12 | 11.0 [6–66] | 15.0 [7–116] | 0.14 | |
RLN, recurrent laryngeal nerve; ICU, intensive care unit; SD, standard deviation; MIE, minimally invasive esophagectomy.