Table 2.

Five- and nine-year breast cancer-specific survival in the pre-and post-program group and screening group

	5-year		9-year
Group	Survival	95% CI	Survival	95% CI
Pre-program group	0.76	0.75 to 0.77	0.66	0.65 to 0.67
Post-program group	0.80	0.79 to 0.81	0.72	0.70 to 0.74
Screening group	0.91	0.90 to 0.92	0.84	0.80 to 0.88

CI = confidence interval.