Baseline BMI was a statistically significant predictor of RFS ( adjusted hazard ratio -LSB- HR -RSB- for each five-unit increase in BMI = @ , @ % confidence interval -LSB- CI -RSB- = @ to @ , P = @ ) and OS ( adjusted HR = @ , @ % CI = @ to @ , P = @ ) BMI and molecular phenotypes were independent prognostic factors for RFS , with no statistically significant interactions detected .