Table 5.

Relative survival ratio by age for the 2492 Asian breast cancer patients treated with breast-conserving therapy (1989–2012)

Age group	5-year cumulative survival rate (%)		5-year RSR [%(95% CI)]
	Observed	Expected
≤ 40	94.3	99.7	94.6 (91.2–96.8)
41–50	96.7	99.2	97.4 (95.7–98.6)
51–60	96.9	98.1	98.8 (96.6–100.1)
> 60	92.3	93.0	99.2 (94.1–102.5)

RSR relative survival ratio