Serum triglycerides concentration in relation to total and cardiovascular mortality in an elderly Chinese population

摘要

OBJECTIVE To investigate serum triglycerides in relation to all-cause,cardiovascular,and non-cardiovascular mortality in an elderly Chinese population.METHODS The study participants(n=3565)were elderly(≥60 years)community dwellers living in a suburban town of Shanghai.Hypertriglyceridemia was defined as a serum triglycerides concentration≥2.30 mmol/L(definite)and≥1.70 mmol/L(borderline),respectively.RESULTS The prevalence of definite and borderline hypertriglyceridemia at baseline was 7.5%and 29.5%,respectively.It was higher in women(n=1982,9.0%and 33.8%,respectively)than men(n=1583,6.2%and 27.9%,respectively),in obese and over-weight participants(n=1566,10.5%and 36.4%,respectively)than normal weight participants(n=1999,5.6%and 27.1%,respect-ively),and in diabetic participants(n=177,11.9%and 39.0%,respectively)than non-diabetic participants(n=3388,7.5%and 30.8%,respectively).During a median of 7.9 years follow-up,all-cause,cardiovascular and non-cardiovascular deaths occurred in 529,216 and 313 participants,respectively.In analyses according to the quintile distributions of serum triglycerides concentration,the sex-and age-standardized mortality rate was lowest in the middle quintile for all-cause,cardiovascular and non-cardiovascu-lar mortality(18.6,7.8 and 11.9 per 1000 person-years,respectively,versus 21.5,10.5 and 12.7 per 1000 person-years,respectively,in the two lower quintiles and 21.7,9.5 and 14.0 per 1000 person-years,respectively,in the two higher quintiles).The fully adjus-ted hazard ratios(95%CI)for the middle quintile versus the combined two lower with two higher quintiles were 0.85(95%CI:0.67-1.07,P=0.17),0.81(95%CI:0.54-1.19,P=0.28)and 0.87(95%CI:0.64-1.17,P=0.35)for all-cause,cardiovascular and non-cardiovascular mortality,respectively.CONCLUSIONS Our study showed high prevalence of hypertriglyceridemia,especially when defined as borderline and in obese and overweight participants,and mildly but non-significantly elevated risks of cardiovascular mortality relative to the middle level of serum triglycerides.