Table 2.
Clinicopathological factors associated with at least 5 SBN evaluations at back table and frozen section (step 7 in checklist).
| Success in step 7 (n = 82) | Failure in step 7 (n = 13) | ∗ P | ∗∗ P | |
|---|---|---|---|---|
| Learning curve | 0.734 | |||
| First half cases | 40 (85.1%) | 7 (14.9%) | ||
| Last half cases | 42 (87.5%) | 6 (12.5%) | ||
| Age (years) | 1.000 | |||
| <60 | 53 (86.9%) | 8 (13.1%) | ||
| ≥60 | 29 (85.3%) | 5 (14.7%) | ||
| Gender | 0.558 | |||
| Male | 37 (84.1%) | 7 (15.9%) | ||
| Female | 45 (88.2%) | 6 (11.8%) | ||
| BMI (kg/m2) | 0.028 | 0.042 | ||
| <23.0 | 33 (97.1%) | 1 (2.9%) | Odds ratio = 8.082 | Odds ratio = 10.322 |
| ≥23.0 | 49 (80.3%) | 12 (19.7%) | 95% CI = 1.002~65.156 | 95% CI = 1.082~98.437 |
| Longitudinal tumor locations | 0.319 | |||
| Lower 1/3 | 45 (81.8%) | 10 (18.2%) | ||
| Middle 1/3 | 36 (92.3%) | 3 (7.7%) | ||
| Upper 1/3 | 1 (100.0%) | 0 (0%) | ||
| Circumferential tumor locations | 0.059 | |||
| Lesser curvature | 24 (92.3%) | 2 (7.7%) | ||
| Greater curvature | 27 (90.0%) | 3 (10.0%) | 0.881 | |
| Anterior wall | 21 (91.3%) | 2 (8.7%) | 0.812 | |
| Posterior wall | 10 (62.5%) | 6 (37.5%) | 0.056 | |
| Number of sentinel basin | 0.313 | |||
| 1 | 32 (82.1%) | 7 (17.9%) | ||
| ≥2 | 50 (89.3%) | 6 (10.7%) | ||
| Sentinel basin location | 0.666 | |||
| Lesser curvature | 27 (90.0%) | 3 (10.0%) | ||
| Greater curvature | 28 (82.4%) | 6 (17.6%) | ||
| LC + GC | 27 (87.1%) | 4 (12.9%) | ||
| LN station of sentinel basin | 0.593 | |||
| N1 group (LN numbers 1~6) | 74 (85.1%) | 13 (14.9%) | ||
| N2 group (LN numbers 7, 8a, 9, and 11d) | 8 (100.0%) | 0 (0%) | ||
| Endoscopic tumor size (cm) | 0.156 | 0.054 | ||
| ≤2 | 36 (92.3%) | 3 (7.7%) | ||
| >2 | 46 (82.1%) | 10 (17.9%) | ||
| Histology | 0.210 | 0.105 | ||
| Tubular adenocarcinoma | 54 (90.0%) | 6 (10.0%) | ||
| Signet ring cell carcinoma | 26 (78.8%) | 7 (21.2%) | ||
| pT | 0.644 | |||
| T1 | 73 (86.9%) | 11 (13.1%) | ||
| T2~4 | 9 (81.8%) | 2 (18.2%) | ||
| pN | 1.000 | |||
| N0 | 72 (85.7%) | 12 (14.3%) | ||
| N1~3 | 10 (90.9%) | 1 (9.1%) |
∗Chi-square test or Fisher's exact test. ∗∗Multivariate analysis, using factors of ∗P < 0.25. BMI: body mass index; CI: confidence interval; LN: lymph node.