Table 2.
Postsurgical treatment according to lymph node status in 1411 cT1-2 breast cancer patients from 7 Dutch hospitals operated between 2000 and 2003
| Therapy | Lymph node status | P a | |||
|---|---|---|---|---|---|
| pN0 (n = 922) | pN1micro (n = 103) | pN1a (n = 285) | pN≥1b (n = 101) | ||
| Radiotherapy (%) | 69.2% | 63.1% | 62.5% | 85.1% | <.001 |
| Hormonal therapy (%) | 18.9% | 63.1% | 74.0% | 72.3% | <.001 |
| Chemotherapy (%) | 20.1% | 40.8% | 57.2% | 70.3 % | <.001 |
Records with missing values that were imputed (see appendix): adjuvant radiotherapy: 3 (<1%); adjuvant hormonal therapy: 12 (<1%); adjuvant chemotherapy: 13 (<1%)
aChi-square test