Sentence: Risk factors associated with cardiotoxicity within 2 years of doxorubicin administration included age [ adjusted hazard ratio ( aHR ) = 1.02 , 95 % confidence interval ( CI ) 1.00 - 1.04 ; p = 0.05 ] , metastasis ( aHR = 2.66 ; 95 % CI 1.36 - 5.20 ; p < 0.01 ) , and concomitant trastuzumab ( aHR = 4.08 ; 95 % CI 2.31 - 7.21 ; p
Drug combination annotation:
[{'class': 'NEG', 'spans': ['doxorubicin', 'trastuzumab'], 'is_context_needed': True}]