Abstract
Background and aim: Relationships between the visceral adiposity index (VAI) and type 2 diabetes mellitus (T2DM) have been underexplored.The purpose of this study is to explore correlations between VAI and T2DM in adults in the US.
Methodsang and results: Based on the National Health and Nutrition Examination Survey (NHANES) 2007-2018, 11,214participants aged 20 years or older were included in a cross-sectional study. Multifactorial logistic regression analysis and smoothed curve fitting analysis were performed to investigate links between VAI and the prevalence of T2DM，as well as the stability and incidence between subgroups.In a fully adjusted continuous model, the aggregate population risk of T2DM increased 0.43-fold with each 1-unit increase in VAI [odds ratio (OR) = 1.43; 95% confidence interval (CI) 1.35-1.50]. In the fully adjusted categorical model with VAI scores stratified by quartiles, results showed a higher T2DM advantage among participants in the second, third, and fourth quartiles (Q2: OR 1.35, 95% CI 1.06-1.71; Q3: OR 2.46, 95% CI 1.95-3.11; Q4: OR 4.42, 95% CI 3.55-05.50 ). Compared with Q1, the prevalence of T2DM in the total population increased 3.42-fold in Q4. The above results indicated that VAI was positively associated with the prevalence of type 2 diabetes mellitus, which was consistent and nonlinear with the smoothed curve-fitting analysis (P for non-linear =0). Subgroup analyses after adjusting for covariates showed that keeping with the overall population results, it also was found that there was an interaction between sex and hypertension in the subgroups.
Conclusions: VAI was nonlinearly and positively associated with the prevalence of type 2 diabetes and was more prevalent in women, non-hypertensive than in men, hypertensive populations.