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Table 2 Results of multivariate analysis of breast cancer specific survival and independent factors for length of survival (p < 0.0001; 3 degrees of freeedom; -2 log likelihood = 396.46; chi-square = 44.78)

From: Surgical treatment of breast cancer in patients aged 80 years or older – how much is enough?

Characteristics Subgroup Relative Risk Confidence Interval 95%for Relative Risk
pT-stage pT1 or pT2 1  
pT3 or pT4 1.045 1.017 – 1.074
pN-stage pN0 or unknown 1  
pN1 or pN2 or pN3 4.589 2.393 – 8.799
Estrogen receptors Positive 1  
Negative 3.935 1.940 – 7.984