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Association between weight-adjusted waist index and severe periodontitis using NHANES 2009-2014
Guiying He1,2, Jiatong Zhang1,2, Xinyue Liu1,2
1Stomatology Center, Affiliated Hospital of Hangzhou Normal University, Hangzhou, 310015, China.
Scientific Reports
|August 20, 2025
Summary
The Weight-adjusted Waist Index (WWI) is a novel obesity indicator. Higher WWI is linked to increased risk of severe periodontitis, suggesting its use as a simple predictive marker.
Area of Science:
- Public Health
- Periodontology
- Anthropometry
Background:
- Obesity is linked to periodontitis.
- Novel anthropometric indicators are needed for obesity assessment.
- The Weight-adjusted Waist Index (WWI) is a new indicator for obesity.
Purpose of the Study:
- To investigate the association between WWI and severe periodontitis.
- To evaluate WWI as a potential simple predictive marker for periodontitis.
Main Methods:
- Cross-sectional study using 2009-2014 NHANES data.
- Analysis included 10,307 participants.
- Weighted logistic regression, smoothed curve fitting, and subgroup analyses were employed.
Main Results:
- A significant positive correlation was found between WWI and stage III/IV periodontitis.
- Each 1-unit increase in WWI correlated with a 1.19-fold higher risk of severe periodontitis.
- The association was significant in non-hypertensive individuals.
Conclusions:
- WWI is a novel obesity-based predictive indicator for severe periodontitis.
- WWI may help identify individuals at higher risk for periodontitis.
- Further research may explore WWI's clinical utility in periodontitis prevention.
