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Table 2 Estimated relative cumulative survival at five (S(5)) and ten (S (10)) years after breast cancer diagnosis in Catalonia and the USA.

From: Estimation of age- and stage-specific Catalan breast cancer survival functions using US and Catalan survival data

Source Stage N 5 S(5) IC(0.95) N 10 S(10) IC(0.95)
Cat 1980–89 SEER Historical stage       
     Localized 433 0.87 0.84 – 0.91 312 0.71 0.66 – 0.77
     Regional 384 0.58 0.54 – 0.62 207 0.38 0.34 – 0.42
     Distant 23 0.11 0.07 – 0.18 2 - -
USA 1975–79        
     Localized 16198 0.9 0.90 – 0.91 12847 0.82 0.82 – 0.83
     Regional 11056 0.7 0.69 – 0.70 7172 0.54 0.54 – 0.55
     Distant 603 0.2 0.18 – 0.22 219 0.11 0.10 – 0.12
Cat 1990–2001 AJCC stage       
     I 389 0.99 0.96 – 1.01 171 0.98 0.94 – 1.02
     II- 195 0.92 0.87 – 0.97 86 0.82 0.75 – 0.90
     II+ 309 0.84 0.80 – 0.89 138 0.67 0.62 – 0.73
     III 103 0.58 0.50 – 0.66 41 0.44 0.36 – 0.54
     IV 36 0.29 0.21 – 0.40 10 0.1 0.05 – 0.19
USA 1990–2001        
     I 103291 0.98 0.97 – 0.98 38284 0.94 0.94 – 0.95
     II- 27528 0.92 0.92 – 0.92 10046 0.86 0.85 – 0.86
     II+ 50159 0.86 0.86 – 0.86 15529 0.75 0.74 – 0.75
     III 10086 0.61 0.61 – 0.62 2833 0.48 0.47 – 0.49
     IV 2654 0.24 0.23 – 0.24 418 0.12 0.11 – 0.13
  1. Note: N 5 and N 10 correspond to the number of women at risk at the beginning of the interval in the Girona Cancer Registry (GCR) for Catalonia and in the Surveillance Epidemiology and End Results (SEER) for the USA. The 95% confidence intervals were obtained using Greenwood's formula.