The incidence rate of CVD was reduced for those who reduced their sodium intake and were randomly assigned to MedDiet interventions [ 4.1 / 10,000 ( 95 % CI : 3.1 , 8.0 ) compared with 4.4 / 10,000 ( 95 % CI : 2.7 , 12.4 ) person-years ; P = 0.002 ] .