From: Diagnosis, treatment characteristics, and survival of women with breast cancer aged 65 and above: a hospital-based retrospective study
Stages
Age groups
<65
65-69
70-74
≥75
1
98.0
91.7
94.1
75.2
5 year survival*
2
91.4
92.5
89.8
77.4
3
72.5
81.0
37.5
4
23.4
40.2
43.2
33.8