Table 3.
Univariate and multivariate logistic regression analyses of predictors of positive resection margin
| Variables |
Univariate
a
|
Multivariate
a
|
||
|---|---|---|---|---|
| Odds ratio | P value | Odds ratio | P value | |
| Age, y |
0.98 (0.94, 1.03) |
0.489 |
|
|
| Sex |
|
|
|
|
| Male |
0.69 (0.23, 2.12) |
0.519 |
|
|
| Female |
1.0 |
|
|
|
| Resection |
|
0.22 |
|
NS |
| S-PD |
1.0 |
|
|
|
| c-PD |
4.31 (1.29, 14.37) |
0.017 |
|
|
| IMV |
0.52 (0.06, 4.65) |
0.557 |
|
|
| ASA score |
|
0.721 |
|
|
| 1 |
1.0 |
|
|
|
| 2 |
1.62 (0.46, 5.56) |
0.450 |
|
|
| 3 |
1.58 (0.35, 7.18) |
0.553 |
|
|
| Length of vein resection, |
1.01 (0.92, 1.11) |
0.764 |
|
|
| Blood loss, mL |
1.003 (1.001, 1.004) |
<0.001 |
1.003 (1.001, 1.004) |
<0.001 |
| Blood loss 500 mL |
|
|
|
NS |
| Yes |
3.30 (0.98, 11.11) |
0.054 |
|
|
| No |
1.0 |
|
|
|
| Blood transfusion |
|
|
|
NS |
| Yes |
5.0 (1.48, 16.91) |
0.010 |
|
|
| No |
1.0 |
|
|
|
| Neural invasion |
|
|
|
NS |
| Present |
3.30 (0.98, 11.11) |
0.054 |
|
|
| Absent |
1.0 |
|
|
|
| Vascular invasion |
|
|
|
NS |
| Present |
6.51 (1.40, 30.30) |
0.017 |
|
|
| Absent |
1.0 |
|
|
|
| Lymph node metastasis |
|
|
|
NS |
| Present |
4.49 (1.33, 15.15) |
0.016 |
|
|
| Absent |
1.0 |
|
|
|
| Tumor differentiation |
2.43 (0.66, 8.88) |
0.181 |
|
|
| Overall stage b | 4.20 (1.45, 12.10) | 0.008 | 4.46 (1.31, 15.17) | 0.017 |
Values in parentheses are 95% confidence intervals.
aLogistic regression. bAmerican Joint Committee on Cancer (AJCC) Cancer Staging Manual, 7th edition. ASA, American Society of Anesthesiologists.