Table 2 Factors influencing lymph node yield (univariate analysis)
From: The effect of preoperative chemoradiotherapy on lymph nodes harvested in TME for rectal cancer
| Parameters | Lymph node | SD | P |
|---|---|---|---|
| Total | 13.6 | 7.3 | |
| Age (years): | 0.50 | ||
| <60 (23) | 14.5 | 8.1 | |
| >60 (88) | 13.3 | 7.1 | |
| Sex: | 0.79 | ||
| Male (63) | 13.7 | 7.1 | |
| Female (48) | 13.4 | 7.6 | |
| Tumor site: | 0.24 | ||
| Middle (45) | 14.6 | 7.6 | |
| Lower (66) | 12.9 | 7.1 | |
| Tumor grade: | 0.0003 | ||
| G1 (5) | 13.2 | 6.8 | |
| G2 (76) | 14.1 | 7.3 | |
| G3 (10) | 19.7 | 7.0 | |
| Gx (20) | 8.4 | 3.7 | |
| Stage: | 0.005 | ||
| 0 (7) | 11.7 | 5.4 | |
| I (31) | 12 | 6.4 | |
| II (22) | 15.5 | 8.3 | |
| III (39) | 15.8 | 7.3 | |
| X (12) | 7.9 | 4.5 | |
| Type of surgery: | 0.65 | ||
| Low anterior resection (76) | 13.4 | 7.0 | |
| Abdominalperineal resection (35) | 14.0 | 7.08 | |
| Surgical approach: | 0.02 | ||
| Open (38) | 15.8 | 8.3 | |
| Laparoscopy (73) | 12.4 | 6.4 | |
| Neoadjuvant: | 0.006 | ||
| No (61) | 15.3 | 7.7 | |
| Yes (50) | 11.5 | 6.5 | |
| Surgeons: | 0.18 | ||
| 1 (23) | 16.3 | 10.3 | |
| 2 (16) | 13.6 | 7.3 | |
| 3 (26) | 14.0 | 5.3 | |
| 4 (18) | 13 | 6.7 | |
| 5 (28) | 11.3 | 5.8 | |
| Pathologists: | 0.20 | ||
| 1 (60) | 12.9 | 6.2 | |
| 2 (31) | 14.0 | 7.6 | |
| 3 (10) | 10.6 | 5.6 | |
| 4 (10) | 16.8 | 8.1 |