Table 3. Univariate and multivariate analysis for the prognostic value of tumor deposits in regional lymph nodes negative rectal cancer with preoperative radiotherapy.
| characteristics | Univariate analysis | Multivariate analysis | |||||
|---|---|---|---|---|---|---|---|
| No. (%) | HR | 95% CI | P value | Adjusted HR | 95% CI | P value | |
| Sex | 0.92 | 0.59 – 1.43 | 0.89 | ||||
| Male | 1,962 (62.6) | ||||||
| Female | 1,171 (37.4) | ||||||
| Age (yrs, median: 60) | 1.69 | 1.09 – 2.62 | 0.01a | 1.70 | 0.98 – 2.98 | 0.06 | |
| ≤ 60 | 1,615 (51.5) | ||||||
| > 60 | 1,518 (48.5) | ||||||
| Grade | 0.04a | 0.15 | |||||
| Well differentiated | 198 (7.1) | 1 | Reference | 1 | Reference | ||
| Moderately differentiated | 2,303 (82.7) | 0.73 | 0.33 – 1.60 | 0.43 | 0.77 | 0.23 – 2.52 | 0.66 |
| Poorly differentiated or undifferentiated | 285 (10.2) | 1.45 | 0.59 – 3.60 | 0.42 | 1.51 | 0.41 – 5.61 | 0.54 |
| ypT stage | < 0.001a | 0.21 | |||||
| Tis+T1 | 183 (5.8) | 1 | Reference | 1 | Reference | ||
| T2 | 433 (13.8) | 1.36 | 0.43 – 4.33 | 0.61 | 1.77 | 0.21 – 14.73 | 0.60 |
| T3 | 2,271 (72.5) | 1.82 | 0.66 – 5.02 | 0.25 | 1.46 | 0.20 – 10.76 | 0.71 |
| T4 | 246 (7.9) | 6.13 | 2.08 – 18.01 | 0.001ab | 3.04 | 0.38 – 24.21 | 0.29 |
| Distant metastasis | 4.41 | 2.34 – 8.31 | < 0.001a | 2.54 | 1.00 – 6.47 | 0.05 | |
| No | 3,013 (96.2) | ||||||
| Yes | 120 (3.8) | ||||||
| Marital status | 0.01a | 0.60 | |||||
| Widowed | 240 (7.7) | 1 | Reference | 1 | Reference | ||
| Married | 1,871 (59.7) | 0.47 | 0.25 – 0.88 | 0.01ab | 1.12 | 0.38 – 3.31 | 0.83 |
| Others | 1,022 (32.6) | 0.63 | 0.33 – 1.20 | 0.16 | 1.47 | 0.49 – 4.42 | 0.50 |
| CRM | 1.95 | 1.07 – 3.56 | 0.01a | 2.00 | 1.12 – 3.56 | 0.02a | |
| Negative | 1,434 (80.1) | ||||||
| Positive | 357 (19.9) | ||||||
| Perineural Invasion | 2.82 | 1.48 – 5.35 | < 0.001a | 2.21 | 1.10 – 4.47 | 0.03a | |
| Negative | 2,626 (93.1) | ||||||
| Positive | 194 (6.9) | ||||||
| Tumor deposits | 3.34 | 1.77 – 6.29 | < 0.001a | 2.41 | 1.24 – 4.69 | 0.01a | |
| Absent | 2,916 (93.1) | ||||||
| Present | 217 (6.9) | ||||||
Significant P value.
Significant P value after Bonferroni correction.
Abbreviation: CRM, circumferential resection margin. HR, hazard ratio, CI, confidence interval.