Table 1.
Clinicopathological findings before and after matching
| Entire cohort | P value | Propensity-score matched cohort | P value | |||
|---|---|---|---|---|---|---|
| RDG (n = 69) | LDG (n = 88) | RDG (n = 50) | LDG (n = 50) | |||
| Age (years) | 66.9 ± 10.2 | 72.3 ± 10.1 | 0.001* | 69.2 ± 1.4 | 69.3 ± 1.4 | 0.942 |
| Gender | ||||||
| Male | 45 (65.2%) | 58 (65.9%) | 0.928 | 31 (62.0%) | 34 (68.0%) | 0.529 |
| Female | 24 (34.8%) | 30 (34.1%) | 19 (38.0%) | 16 (32.0%) | ||
| BMI (kg/m2) | 22.4 ± 3.5 | 23.5 ± 3.1 | 0.044* | 23.0 ± 3.6 | 22.9 ± 2.7 | 0.893 |
| Previous abdominal operation | ||||||
| No | 47 (68.1%) | 57 (64.8%) | 0.660 | 32 (64.0%) | 33 (66.0%) | 0.834 |
| Yes | 22 (31.9%) | 31 (35.2%) | 18 (36.0%) | 17 (34.0%) | ||
| Comorbidity | ||||||
| No | 22 (31.9%) | 17 (19.3%) | 0.071 | 13 (26.0%) | 14 (28.0%) | 0.822 |
| Yes | 47 (68.1%) | 71 (80.7%) | 37 (74.0%) | 36 (72.0%) | ||
| ASA PS score | ||||||
| I | 18 (26.1%) | 16 (18.2%) | 0.005* | 12 (24.0%) | 13 (26.0%) | 0.886 |
| II | 48 (69.6%) | 52 (59.1%) | 35 (70.0%) | 33 (66.0%) | ||
| III | 3 (4.3%) | 20 (22.7%) | 3 (6.0%) | 4 (8.0%) | ||
| Tumor size (mm) | 30.0 ± 14.6 | 35.0 ± 23.3 | 0.120 | 31.8 ± 15.1 | 30.4 ± 17.6 | 0.666 |
| Histological type | ||||||
| Differentiated | 38 (55.1%) | 47 (53.4%) | 0.834 | 28 (56.0%) | 26 (52.0%) | 0.688 |
| Undifferentiated | 31 (44.9%) | 41 (46.6%) | 22 (44.0%) | 24 (48.0%) | ||
| pT classification | ||||||
| T1 | 48 (69.6%) | 55 (62.5%) | 0.423 | 33 (66.0%) | 33 (66.0%) | 0.853 |
| T2 | 8 (11.6%) | 7 (8.0%) | 5 (10.0%) | 3 (6.0%) | ||
| T3 | 6 (8.7%) | 10 (11.4%) | 6 (12.0%) | 8 (16.0%) | ||
| T4 | 7 (10.1%) | 16 (18.2%) | 6 (12.0%) | 6 (12.0%) | ||
| pN classification | ||||||
| N0 | 56 (81.2%) | 59 (67.1%) | 0.071 | 38 (76.0%) | 39 (78.0%) | 0.976 |
| N1 | 3 (4.4%) | 11 (12.5%) | 3 (6.0%) | 3 (6.0%) | ||
| N2 | 7 (10.1%) | 7 (8.0%) | 6 (12.0%) | 6 (12.0%) | ||
| N3 | 3 (4.4%) | 11 (12.5%) | 3 (6.0%) | 2 (4.0%) | ||
| pStage | ||||||
| I | 51 (73.9%) | 56 (63.6%) | 0.252 | 34 (68.0%) | 34 (68.0%) | 0.937 |
| II | 11 (15.9%) | 15 (17.1%) | 9 (18.0%) | 10 (20.0%) | ||
| III | 7 (10.1%) | 17 (19.3%) | 7 (14.0%) | 6 (12.0%) | ||
BMI body mass index, ASA American Society of Anesthesiologists, PS performance status
*P < 0.05 indicates statistical significance