TyG index is a predictor of all-cause mortality during the long-term follow-up in middle-aged and elderly with hypertension

• Published in: Clinical and experimental hypertension (1993) 2023-12, Vol.45 (1), p.2272581-2272581
• Main Authors: Pang, Jie, Qian, Linyan, Che, Xiaoru, Lv, Ping, Xu, Qiang
• Format: Article
• Language: English
• Subjects: all-cause mortality; cardiovascular mortality; insulin resistance; NHANES; Triglyceride glucose index
• ISSN: 1064-1963; 1525-6006
• DOI: 10.1080/10641963.2023.2272581

BACKGROUNDThe triglyceride and glucose (TyG) index has been found to be significantly associated with a higher risk of mortality. However, there has been a lack of studies exploring the specific relationship between the TyG index and all-cause and cardiovascular mortality among middle-aged and elderly with hypertension.METHODSA total of 3,614 participants with hypertension were enrolled from the National Health and Nutrition Examination Survey. The TyG index was calculated using the formula log [fasting triglycerides (mg/dL) x fasting glucose (mg/dL)/2]. The Cox proportional hazard ratios were used to evaluate the association between the TyG index and the risk of mortality.RESULTSOver a follow-up period of 7.87 years, 991 all-cause death and 189 cardiovascular deaths occurred. Compared with the reference quartile, the multivariate-adjusted hazard ratios and 95% confidence intervals were 1.28 (1.07-1.53; p = .006) in the fourth quartile for all-cause mortality and 0.63 (0.42-0.96; p = .031) in the second quartile for cardiovascular mortality. Dose-response analysis indicated an L-shaped relationship.CONCLUSIONSThe TyG index exhibited an L-shaped association with the risk of all-cause mortality among middle-aged and elderly with hypertension.