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Chronic Kidney Disease Outcomes / Cardiovascular Diseases / Obesity Indices · Journal article
Renal Failure · August 26, 2026
Well-designed and adequately powered for the question it asks.
In a large U.S. prospective cohort of adults with chronic kidney disease, higher weight-adjusted waist index (WWI) was independently associated with increased risk of cardiovascular disease (OR 1.81) and both CVD-specific (HR 1.73) and all-cause mortality (HR 1.45), with systemic inflammation markers partially mediating these associations. WWI demonstrated moderate discriminatory performance for mortality prediction (AUC 0.763 for all-cause, 0.793 for CVD mortality), suggesting potential clinical utility for CKD risk stratification.
Prospective cohort study with linked national mortality registry. Adults with chronic kidney disease enrolled in NHANES 2005–2018; 5,381 participants analyzed with complete data on WWI and mortality follow-up.. Intervention: Weight-adjusted waist index (WWI) as continuous and quartile-stratified exposure. Compared with: Lowest quartile of WWI (reference category). n = 5,381. United States (NHANES participants, linked to National Death Index).
Higher WWI quartiles associated with CVD risk (highest vs. lowest quartile OR: 1.81, 95% CI: 1.39–2.34) in 5,381 CKD participants CVD-specific mortality: highest vs. lowest WWI quartile HR 1.73 (95% CI: 1.15–2.60) All-cause mortality: highest vs. lowest WWI quartile HR 1.45 (95% CI: 1.22–1.72)
CVD-specific mortality: highest vs. lowest WWI quartile HR 1.73 (95% CI: 1.15–2.60) All-cause mortality: highest vs. lowest WWI quartile HR 1.45 (95% CI: 1.22–1.72)
Clinicians managing CKD patients should recognize that weight-adjusted waist index may provide improved cardiovascular risk stratification beyond conventional obesity measures; however, prospective intervention trials are needed before recommending WWI-guided clinical management as standard practice. The association with inflammatory markers suggests that visceral adiposity reduction strategies might offer benefit in this population.
Large prospective cohort study with hard clinical endpoints (CVD and all-cause mortality), robust adjusted effect sizes, and confirmation across subgroups and sensitivity analyses, but observational design precludes practice-changing status.
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Quoted from the source exactly as published.
Clinicians managing CKD patients should recognize that weight-adjusted waist index may provide improved cardiovascular risk stratification beyond conventional obesity measures; however, prospective intervention trials are needed before recommending WWI-guided clinical management as standard practice. The association with inflammatory markers suggests that visceral adiposity reduction strategies might offer benefit in this population.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Central adiposity is a key driver of cardiovascular risk in chronic kidney disease (CKD), yet conventional obesity indices incompletely capture this risk. The weight-adjusted waist index (WWI) is an emerging anthropometric measure that integrates abdominal adiposity independent of body weight, but its prognostic relevance in CKD remains unclear. This prospective cohort study utilized data from the National Health and Nutrition Examination Survey (NHANES 2005-2018) and the National Death Index. Over a median follow-up of 79 months, higher WWI quartiles were associated with progressively increased risks of CVD (highest vs. lowest quartile OR: 1.81, 95% CI: 1.39-2.34) and mortality (CVD HR: 1.73, 95% CI: 1.15-2.60; all-cause HR: 1.45, 95% CI: 1.22-1.72) among 5,381 participants. Subgroup and sensitivity analyses further confirmed the robustness of these findings. Mediation analysis revealed that both the neutrophil-to-lymphocyte ratio and the systemic inflammation response index significantly mediated the associations between WWI and all-cause mortality, as well as between WWI and CVD-specific mortality. In fully adjusted Model 2, receiver operating characteristic curve analysis showed area under the curve values for WWI in relation to CVD mortality and all-cause mortality of 0.793 and 0.763, respectively. WWI is a robust predictor of cardiovascular and all-cause mortality in U.S. adults with CKD, with systemic inflammation partially mediating this relationship. Incorporating WWI into CKD risk stratification may improve identification of high-risk cardio-kidney-metabolic phenotypes.
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