Table 1.
Demographics characteristics
| Variables | All patients (n = 184, %) | p-value | LRLN lymph node dissection (n = 110, %) | p-value | |||
|---|---|---|---|---|---|---|---|
| VAME (n = 75) | RAME (n = 109) | VAME (n = 40) | Early RAME (n = 43) | Last RAME (n = 27) | |||
| Age, years, mean ± SD | 61.1 ± 6.6 | 60.0 ± 6.1 | 0.329 | 60 ± 6.1 | 59.6 ± 6.8 | 59.5 ± 5 | 0.845 |
| Sex ratio (M:F) | 65:10 | 90:19 | 0.453 | 35:5 | 36:7 | 23:4 | 0.941 |
| Smoking (n, %) | 48 (64.0) | 72 (66.1) | 0.774 | 27 (67.5) | 28 (65.1) | 20 (74.1) | 0.758 |
| Drinking (n, %) | 46 (61.3) | 77 (70.6) | 0.187 | 22 (55.0) | 29 (67.4) | 21 (77.8) | 0.148 |
| Comorbidity | |||||||
| Hypertension | 18 (24.0) | 42 (38.5) | 0.039 | 9 (22.5) | 15 (34.1) | 11 (40.7) | 0.259 |
| Diabetes | 6 (8.0) | 10 (9.2) | 0.781 | 4 (10.0) | 5 (11.6) | 3 (10.9) | 1.000 |
| Heart disease | 5 (6.7) | 13 (11.9) | 0.238 | 1 (2.5) | 5 (11.6) | 3 (11.1) | 0.266 |
| Weight loss | 0.958 | 0.290 | |||||
| Yes | 20 (23.5) | 26 (23.9) | 10 (25.0) | 15 (34.9) | 5 (18.5) | ||
| No | 65 (76.5) | 83 (76.1) | 30 (75.0) | 28 (65.1) | 22 (81.5) | ||
| Tumor location | 0.481 | 0.817 | |||||
| 20–25 cm | 7 (9.3) | 8 (7.3) | 3 (7.5) | 2 (4.7) | 2 (7.4) | ||
| > 25 & ≤ 30 cm | 29 (38.7) | 35 (32.1) | 12 (30.0) | 14 (32.6) | 10 (37.0) | ||
| > 30 cm | 36 (48.0) | 64 (58.7) | 23 (57.5) | 27 (62.8) | 14 (51.9) | ||
| Mutitumor | 3 (4.0) | 2 (1.8) | 2 (5.0) | 0 (0) | 1 (3.7) | ||
| Neoadjuvant chemoradiotherapy/chemotherapy | 10/10 | 12/16 | 0.877 | 2/9 | 6/8 | 2/4 | 0.653 |
| pCR | 4 (20) | 7 (25) | – | 2 (18.2) | 5 (35.7) | 0 (0) | – |
| Pathological T stage | 0.213 | 0.514 | |||||
| 0 | 4 (5.3) | 8 (7.3) | 2 (5.1) | 5 (11.6) | 1 (3.7) | ||
| 1 | 23 (30.7) | 18 (16.5) | 8 (20.5) | 10 (23.3) | 4 (14.8) | ||
| 2 | 14 (18.7) | 26 (23.9) | 11 (28.2) | 9 (20.9) | 4 (14.8) | ||
| 3 | 23 (30.7) | 34 (31.2) | 12 (30.8) | 9 (20.9) | 8 (29.6) | ||
| 4 | 11 (14.7) | 23 (21.1) | 6 (15.4) | 10 (23.3) | 10 (37.0) | ||
| Pathological N stage | 0.327 | 0.113 | |||||
| 0 | 45 (60.0) | 52 (47.7) | 20 (50.0) | 25 (58.1) | 8 (29.6) | ||
| 1 | 15 (20.0) | 29 (26.6) | 10 (25.0) | 12 (27.9) | 8 (29.6) | ||
| 2 | 13 (17.3) | 21 (19.3) | 9 (22.5) | 5 (11.6) | 7 (25.9) | ||
| 3 | 2 (2.7) | 7 (6.4) | 1 (2.5) | 1 (2.3) | 4 (14.8) | ||
LRLN left recurrent laryngeal nerve