Table 3. Comparison of lymphadenectomy between McKeown and Ivor Lewis RAMIE in the learning and commanding phase.
| Characteristics | Learning phase of | Commanding phase of | |||||
|---|---|---|---|---|---|---|---|
| M-RAMIE | IV-RAMIE | P value | M-RAMIE | IV-RAMIE | P value | ||
| Age | 62.17±7.08 | 63.44±8.77 | 0.610 | 61.67±7.38 | 60.00±8.77 | 0.491 | |
| BMI (kg/m2) | 23.19±2.90 | 22.80±2.53 | 0.483 | 22.62±3.05 | 23.04±2.32 | 0.643 | |
| Female/male | 4/19 | 3/15 | 1.000 | 8/38 | 1/12 | 0.668 | |
| Diabetes | 1 (4.3%) | 2 (11.1%) | 0.573 | 2 (4.3%) | 0 (0.0%) | 1.000 | |
| Hypertension | 6 (26.1%) | 5 (27.8%) | 0.903 | 12 (26.1%) | 3 (23.1%) | 1.000 | |
| Tumor location | 0.056 | 0.180 | |||||
| Upper | 5 (21.7%) | 0 (0.0%) | 8 (17.4%) | 0 (0.0%) | |||
| Middle and lower | 18 (78.3%) | 18 (100.0%) | 38 (82.6%) | 13 (100.0%) | |||
| RLN-LNs | 2.00±2.15 | 0.17±0.38 | 0.001 | 3.37±2.16 | 0.92±2.06 | 0.001 | |
| Thoracic LNs | 8.22±3.24 | 7.56±3.07 | 0.511 | 11.96±5.38 | 9.38±4.11 | 0.117 | |
| Abdomen LNs | 10.61±8.34 | 11.28±6.22 | 0.778 | 9.98±6.32 | 12.31±7.22 | 0.260 | |
| Total LN | 18.83±9.13 | 18.83±7.29 | 0.998 | 21.93±8.47 | 21.69±7.28 | 0.926 | |
| T stage | 0.063 | 0.701 | |||||
| T0-T2 | 12 (52.2%) | 4 (22.2%) | 22 (47.8%) | 7 (53.8%) | |||
| T3-T4a | 11 (47.8%) | 14 (77.8%) | 24 (52.2%) | 6 (46.2%) | |||
| N stage | 0.087 | 0.019 | |||||
| N0-N1 | 19 (82.6%) | 10 (55.6%) | 41 (89.1%) | 8 (61.5%) | |||
| N2-N3 | 4 (17.4%) | 8 (44.4%) | 5 (10.9%) | 5 (38.5%) | |||
| TNM stage | 0.116 | 0.059 | |||||
| 0-II | 12 (52.2%) | 5 (27.8%) | 34 (73.9%) | 6 (46.2%) | |||
| III-IVa | 11 (47.8%) | 13 (72.2%) | 12 (26.1%) | 7 (53.8%) | |||
BMI, body mass index; LN, lymph node; RLN-LN, recurrent laryngeal nerve lymph node.