Table 33.9. Adjuvant polychemotherapy for breast cancer: data from the 1998 overview analysis

Table 33.9. Adjuvant polychemotherapy for breast cancer: data from the 1998 overview analysis.
	Number of patients
Age group (years)	Chemo group	Control group	Proportional reduction in recurrence (SD)	Proportional reduction in mortality (SD)
<40	694	675	37% (7)	27% (8)
40-49	1629	1531	34% (5)	27% (5)
50-59	3362	3411	22% (4)	14% (4)
60-69	3394	3413	18% (4)	8% (4)
≥70	307	302	—^a	—^a
Overall (including <50)	9386	9332	23.8% (2.2)	15.2% (2.4)
^aSo few women were aged 70 or over at presentation that they are excluded from the age-specific analysis.
Source: From the Early Breast Cancer TrialistsN: Collaborative Group,¹⁶⁶ with permission.