Association between weight-adjusted waist index and periodontitis: A population-based study

• Published in: PloS one 2024-06, Vol.19 (6), p.e0305010
• Main Authors: Xu, Lihan, Liu, Yuntao, Zhao, Chenchen, Wang, Jiaying, Zhou, Haojing
• Format: Article
• Language: English
• Subjects: Adult; Aged; Biology and Life Sciences; Body mass index; Body Weight; Comparative analysis; Cross-Sectional Studies; Curve fitting; Diabetes; Female; Gender; Gum disease; Humans; Male; Medicine and Health Sciences; Middle Aged; Nutrition Surveys; Obesity; Periodontitis; Periodontitis - epidemiology; Population studies; Prevalence; Quartiles; Regression analysis; Regression models; Risk Factors; Secondary schools; Social Sciences; Statistical analysis; Subgroups; Trends; Waist Circumference; Weight
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0305010

This study aims to examine the association between the Weight-adjusted Waist Circumference Index (WWI) and the prevalence of periodontitis, providing novel evidence on the link between central obesity and periodontal health. A cross-sectional study was conducted with 10,289 participants enrolled from NHANES 2009 to 2014. WWI was calculated by dividing waist circumference by the square root of weight. We employed a multivariate logistic regression model and smoothed curve fitting method to evaluate the relationship between WWI and periodontitis. We also compared different subgroups and analyzed the interaction effects. A significant positive association between WWI and periodontitis was observed in 10,289 participants aged ≥30 (OR: 1.20, 95% CI: 1.12-1.28). Upon categorizing WWI into quartiles, the top quartile group exhibited a 27% increased prevalence of periodontitis compared to the bottom quartile (OR: 1.27, 95% CI: 1.10-1.46; P for trend = 0.001). Among individuals aged 30 to 60, the strength of this positive correlation is more pronounced than in those aged 60 and above. WWI demonstrates a positive correlation with periodontitis with a particularly pronounced impact on moderate periodontitis, suggesting its potential to improve periodontitis prevention in a broad population.