Dose–response association of the ZJU index and fatty liver disease risk: A large cohort in China

Abstract Aim The aim of this study is to investigate the sex‐specific association between the ZJU index and risk of fatty liver disease in a large Chinese cohort. Methods A total of 28 729 adults without fatty liver disease at baseline and who completed at least one follow‐up of annual examinations between 2009 and 2016 were included in this study. The Cox proportional hazards model was used to estimate hazard ratios (HRs) and 95% confidence intervals (CI) for fatty liver disease risk associated with the ZJU index. Results During a median follow‐up of 3.01 years, 7373 developed fatty liver disease. There were significant associations between the ZJU index and fatty liver disease for women and men with increasing HRs as the quartiles increase across Q2–Q4, corresponding HRs (95% CIs) in M3 were 2.28 (1.98–2.64), 3.52 (3.07–4.04), and 4.87 (4.24–5.59) for women and 2.44 (2.17–2.75), 4.18 (3.73–4.68), and 6.23 (5.56–6.98) for men. The association between the ZJU index and fatty liver disease risk remained significant in all the subgroups except that of T2DM and abdominal obesity subgroups for men. However, the association became nonsignificant when comparing Q3 and Q2 of the ZJU index with reference in the subgroups of T2DM for men, and nonsignificant when comparing Q3 of the ZJU index with reference in the subgroups of participants with T2DM and abdominal obesity for women. Conclusion The ZJU index was significantly associated with the risk of fatty liver disease in Chinese population. It will be better to keep body mass index, alanine aminotransferase, aspartate aminotransferase, triglyceride, and fasting plasma glucose at a normal level for preventing fatty liver disease.