From: Age exerts a continuous effect in the outcomes of Asian breast cancer patients treated with breast-conserving therapy
Age at diagnosis (years)
Number
%
≤ 30
66
2.7
31–40
381
15.3
41–50
953
38.2
51–60
738
29.6
61–70
293
11.8
71–80
56
2.3
> 80
5
0.2