TABLE 1.
Demographic variables of ESCC patients with RAMIE.
| Variables | All patients, n = 201 (%) | Before matching | p | After matching | p | ||
|---|---|---|---|---|---|---|---|
| NCI, n = 58 (%) | Surgery only, n = 143 (%) | NCI, n = 55 (%) | Surgery only, n = 55 (%) | ||||
| Age, years, mean ± SD | 62.2 ± 7.9 | 61.0 ± 7.4 | 63.8 ± 8.0 | 0.017 | 60.8 ± 6.9 | 62.7 ± 5.7 | 0.111 |
| Sex ratio (M:F) | 178:23 | 49:9 | 129:14 | 0.405 | 46:9 | 50:5 | 0.392 |
| Smoking (n, %) | 137 (68.2) | 40 (69.0) | 97 (67.8) | 0.876 | 39 (70.9) | 36 (65.5) | 0.683 |
| Drinking (n, %) | 135 (67.2) | 41 (70.7) | 94 (65.7) | 0.498 | 40 (72.7) | 36 (65.5) | 0.536 |
| Comorbidity | |||||||
| Hypertention | 53 (26.4) | 15 (25.9) | 38 (26.6) | 0.917 | 15 (27.3) | 14 (25.5) | 0.829 |
| Diabetes | 23 (11.4) | 7 (12.1) | 16 (11.2) | 0.859 | 6 (10.9) | 6 (10.9) | 1.000 |
| Heart disease | 10 (5.0) | 1 (1.7) | 9 (6.3) | 0.287 | 1 (1.8) | 4 (7.3) | 3.363 |
| Tumor location | 0.093 | 0.354 | |||||
| 20–25 cm | 17 (8.5) | 3 (5.2) | 14 (9.8) | 2 (3.6) | 4 (7.3) | ||
| >25 and ≤30 cm | 64 (31.8) | 25 (43.1) | 39 (27.3) | 25 (45.5) | 18 (32.7) | ||
| >30 cm | 120 (59.7) | 30 (51.7) | 90 (62.9) | 28 (50.9) | 33 (50.9) | ||
| cT stage | <0.001 | 0.251 | |||||
| T1 | 42 (20.9) | 2 (3.4) | 40 (28.0) | 0 | 0 | ||
| T2 | 18 (9.0) | 0 | 18 (12.6) | 0 | 3 (5.5) | ||
| T3 | 130 (64.7) | 50 (86.2) | 80 (55.9) | 49 (89.1) | 48 (87.3) | ||
| T4 | 11 (5.5) | 6 (10.3) | 5 (3.5) | 6 (10.9) | 4 (7.3) | ||
| cN stage | 0.002 | 0.689 | |||||
| N0 | 69 (34.3) | 9 (15.5) | 60 (42.0) | 8 (14.5) | 6 (10.9) | ||
| N1 | 70 (34.8) | 26 (44.8) | 44 (30.8) | 25 (45.5) | 30 (54.5) | ||
| N2 | 58 (28.9) | 22 (37.9) | 36 (25.2) | 21 (38.2) | 19 (34.5) | ||
| N3 | 4 (2.0) | 1 (1.7) | 3 (2.1) | 1 (1.8) | 0 | ||
Abbreviations: ESCC, esophageal squamous cell carcinoma; F, female; M, male; NCI, neoadjuvant chemoimmunotherapy; RAMIE, robot‐assisted minimally invasive esophagectomy; SD, standard deviation.