Age-adjusted 180-day mortality was lower in women ( 15.8 % vs. 18.5 % , hazard ratio 0.74 ; 95 % confidence interval 0.59-0 .93 , P = 0.010 ) , but multivariable risk-adjusted mortality was similar in both sexes , mainly attributable to lower blood urea nitrogen , higher LVEF , and higher systolic blood pressure in women compared with men .