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Table 3 Comparison of the expected cases ( E ) of invasive breast cancer predicted by each respective model, to the observed cases ( O ) in the Singapore Breast Screening Programme (SBSP) cohort for each ethnic group

From: Assessing risk of breast cancer in an ethnically South-East Asia population (results of a multiple ethnic groups study)

Age at entry, (y) No. of women followed    GAIL-SBSP    S-GAIL-SBSP    E-GAIL-SBSP  
   O E E/O(CI) P E E/O(CI) P E E/O(CI) P
Overall            
45–49 109 0 0.95 0.092 0.97 0.111 0.96 0.006
50–59 13,911 144 124.11 0.86 (0.73 to 1.01)   124.86 0.87 (0.74 to 1.02)   149.12 1.04 (0.88 to 1.22)  
60–69 14,642 95 115.38 1.21 (0.99 to 1.49)   114.57 1.21 (0.99 to 1.47)   137.70 1.45 (1.19 to 1.77)  
70–74 221 2 1.40 0.70 (0.18 to 2.80)   1.40 0.70 (0.17 to 2.80)   1.69 0.85 (0.21 to 3.38)  
Total 28,883 241 241.83 1.00 (0.88 to 1.14) 0.957 241.80 1.00 (0.88 to 1.14) 0.959 289.47 1.20 (1.06 to 1.36) 0.004
Chinese            
45–49 93 0 0.85 0.440 0.87 0.480 0.84 0.076
50–59 11,795 119 109.98 0.92 (0.77 to 1.11)   109.64 0.92 (0.77 to 1.10)   127.35 1.07 (0.89 to 1.28)  
60–69 12,256 87 99.85 1.15 (0.93 to 1.42)   98.22 1.13 (0.91 to 1.39)   115.12 1.32 (1.07 to 1.63)  
70–74 195 2 1.21 0.60 (0.15 to 2.42)   1.20 0.60 (0.15 to 2.40)   1.44 0.72 (0.18 to 2.88)  
Total 24,339 208 211.88 1.02 (0.89 to 1.17) 0.790 209.93 1.01 (0.88 to 1.16) 0.894 244.75 1.18 (1.03 to 1.35) 0.019
Malay            
45–49 7 0 0.05 0.652 0.06 0.591 0.05 0.209
50–59 711 4 4.91 1.23 (0.46 to 3.27)   5.23 1.31 (0.49 to 3.48)   7.27 1.82 (0.68 to 4.85)  
60–69 889 2 5.41 2.71 (0.68 to 10.82)   5.67 2.84 (0.71 to 11.34)   7.72 3.86 (0.97 to 15.43)  
70–74 12 0 0.08   0.08   0.11  
Total 1,619 6 10.46 1.74 (0.78 to 3.88) 0.168 11.04 1.84 (0.83 to 4.09) 0.130 15.15 2.53 (1.13 to 5.62) 0.019
Indian            
45–49 5 0 0.03 <0.001 0.03 <0.001 0.02 0.002
50–59 683 16 4.75 0.30 (0.18 to 0.48)   5.08 0.32 (0.19 to 0.52)   6.98 0.44 (0.27 to 0.71)  
60–69 727 1 5.34 5.34 (0.75 to 37.90)   5.56 5.56 (0.78 to 39.49)   7.58 7.58 (1.07 to 53.79)  
70–74 7 0 0.04   0.04   0.05  
Total 1,422 17 10.16 0.60 (0.37 to 0.96) 0.032 10.71 0.63 (0.39 to 1.01) 0.055 14.64 0.86 (0.54 to 1.38) 0.537