After risk adjustment , WHF was associated with increased 30-day mortality ( odds ratio 13.37 , 95 % CI 9.85-18 .14 ) , 30-day mortality or HF rehospitalization ( odds ratio 6.78 , 95 % CI 5.25-8 .76 ) , and 180-day mortality ( hazard ratio 3.90 , 95 % CI 3.14-4 .86 ) ( all P values < .0001 ) .