Radiation impact in breast cancer

Breast Cancer Research

Table 2 Rates of breast cancer relapse and hazard ratios related to dose intensity of chemotherapy

Subset	Dose intensity of chemotherapy	No radiation (%)	Radiation (%)	Hazard ratio (DFS)
Arriagada and colleagues [20]
Node-negative	0.0	59	47	0.70
Node-positive		82	67	0.65
Overgaard and colleagues [2]
N1 to N3	0.4	53	37	0.61
N4⁺		76	60	0.64
Ragaz and colleagues [1]
N1 to N3	0.6	48	36	0.68
N4⁺		83	62	0.55

Absolute and relative rates of breast cancer relapse (%) and hazard ratios related to the dose intensity of chemotherapy. N1 to N3, one to three axillary nodes involved; (N4⁺), four or more axillary nodes involved. DFS, first event breast cancer recurrence (or any death).

ISSN: 1465-542X