Non-alcoholic fatty liver disease is not independent risk factor for cardiovascular disease event:A cohort study

BACKGROUND There are no consistent results between previous studies for an independent association between non-alcoholic fatty liver disease(NAFLD)and cardiovascular disease(CVD)events.AIM To determine if there is an independent association between NAFLD and CVD events.METHODS In the present study,valid outcome data of 4808 subjects were available for phase 2 of our cohort study.These subjects had been followed up for seven years from phase 1,beginning in 2009-2010 to phase 2 during 2016-2017.Simple and multiple Cox proportional models were used to determine the association between NAFLD in the primary phase of the cohort and subsequent fatal and non-fatal CVD events during follow-up.RESULTS The incidence of non-fatal CVD events in males with NAFLD was significantly higher(P=0.004)than in males without NAFLD.A positive association was demonstrated between NAFLD and non-fatal CVD events in males(Hazard ratio=1.606;95%CI:1.166-2.212;P=0.004)by the simple Cox proportional hazard model,but no independent association was detected between these in the multiple Cox models.CONCLUSION No independent association was detected between NAFLD and CVD.It is likely that diabetes mellitus and age may be the principle mediators in this regard.