Trends in incidence, mortality and survival in women with breast cancer from 1985 to 2012 in Granada, Spain: a population-based study

Table 5 Trends in observed 5-year survival and age-standardized net survival in women with breast cancer

Period	n	Observed survival			Net survival (age-standardized)
Period	n	OS	95%CI		NS	95%CI
1985–1989	844	63.9	60.5	67.0	67.5	61.8	72.5
1990–1994	1087	67.5	64.6	70.2	69.6	64.7	73.9
1995–1999	1344	73.7	71.3	76.0	76.4	72.4	79.8
2000–2004	1721	77.0	75.0	79.0	78.9	75.7	81.8
2005–2009	2030	80.0	78.2	81.7	82.1	79.0	84.7
2010–2012^a	1791	81.0	78.8	83.1	83.7	79.8	86.8

^aPeriod analysis instead of cohort analysis was used
Estimates for observed survival calculated with the Kaplan-Meyer method, and for net survival calculated with the Pohar–Perme method (cohort analysis) in 5-year periods from 1985 to 2012 and in the 3-year period from 2010 to 2012. Age-standardized rates referred to the European population. Population: 463816 women residing in Granada province (Source: 2011 population census for Granada, Statistics and Cartography Institute of Andalusia). OS: observed survival; NS: net survival

ISSN: 1471-2407