Compared with those with QRS < 90 ms , patients with QRS 120 ms , had an increased mortality [ hazard ratio ( HR ) 1.61 , 95 % confidence interval ( CI ) : 1.29-2 .03 , P < 0.001 ] and hospitalizations ( HR 1.14 , 95 % CI : 1.07-1 .34 , P = 0.043 ) over an average follow-up of 3.5 years .