Resting heart rate ( per 10 beats per minute ; hazard ratio [ HR ] , 2.78 ; 95 % confidence interval [ CI ] , 1.18-6 .58 ) and diabetes mellitus at baseline ( HR , 1.47 ; 95 % CI , 1.03-2 .10 ) were significantly associated with an increased risk of stroke recurrence in the multivariable analysis .