Cumulative incidence of cardiovascular disease mortality was 11.9 % ( 95 % CI 8.8-15 .0 ) in the intervention group versus 19.6 % ( 12.9-26 .3 ) in the control group ( hazard ratio [ HR ] 0.59 , 95 % CI 0.36-0 .96 ; p = 0.033 ) .