Table 5.
Results of the multivariate logistic model analysis evaluating the probability of being treated with adjuvant chemotherapy for pT1a and pT1b breast cancers
| Variable | Odds ratio | 95% CI | P value |
|---|---|---|---|
|
Age range (years) |
|
|
0.0185 |
| ≥70 |
1 |
|
|
| 18–34 |
NE |
NE |
|
| 35–49 |
8.22 |
2.00-33.67 |
|
| 50–70 |
2.44 |
0.69-8.58 |
|
|
Grading |
|
|
0.024 |
| G1 |
1 |
|
|
| G2 |
3.48 |
0.56-5.01 |
|
| G3 |
8.33 |
1.82-33 |
|
|
ER receptor |
|
|
0.0007 |
| Positive |
1 |
|
|
| Negative |
11.43 |
2.78-47.03 |
|
|
Proliferative index |
|
|
0.001 |
| Low |
1 |
|
|
| Medium |
2.08 |
0.28-16 |
|
| High |
9.10 |
2.57-33 |
|
|
HER2 |
|
|
0.002 |
| Negative |
1 |
|
|
| Positive | 9.09 | 2.73-33.3 |
NE, not evaluable due to the small sample in this category