Study | Number | Observed | Predicted | Difference (%) | P value |
---|---|---|---|---|---|
Total mortality | |||||
ECRIC | 5738 | 1550 | 1600 | 3 | 0.21 |
BCOS | 981 | 255 | 270 | 6 | 0.34 |
NTBCS | 1944 | 488 | 468 | −4 | 0.36 |
POSH | 2609 | 544 | 621 | 12 | 0.00 |
Total | 11,272 | 2837 | 2958 | 4 | 0.023 |
Breast cancer-specific mortality | |||||
ECRIC | 5738 | 932 | 953 | 2 | 0.48 |
BCOS | 981 | 227 | 244 | 7 | 0.25 |
NTBCS | 1944 | 325 | 331 | 2 | 0.74 |
POSH | 2609 | 527 | 581 | 9 | 0.018 |
Total | 11,272 | 2011 | 2110 | 5 | 0.027 |
Non-breast cancer mortality | |||||
ECRIC | 5738 | 618 | 646 | 4 | 0.25 |
BCOS | 981 | 28 | 26 | −9 | 0.66 |
NTBCS | 1944 | 163 | 137 | −19 | 0.039 |
POSH | 2609 | 17 | 39 | 57 | <0.001 |
Total | 11,272 | 826 | 848 | 3 | 0.44 |