Fig. 4

Weighted multivariate linear regression analyses for the association between the interdental cleaning frequency and ln-transformed serum high-sensitivity CRP. Model 1: adjusting interdental cleaning frequency (number of days per week), age, sex and race. Model 2: adjusting interdental cleaning frequency (number of days per week), self-reported oral health status, history of scaling and root planing treatment, age, sex, race, family income, education levels, marital status, smoking status, drinking status, dietary quality, overweight status, decreased HDL status, elevated FPG status, and high blood pressure status. Model 3: adjusting interdental cleaning frequency (number of days per week), the number of missing teeth, history of scaling and root planing treatment, age, sex, race, family income, education levels, marital status, smoking status, drinking status, dietary quality, overweight status, decreased HDL status, elevated FPG status, and high blood pressure status. Data are shown as regression estimates (β) and 95% CI. Abbreviations: CI, Confidence interval; HDL, High-density lipoprotein cholesterol; FPG, Fasting Plasma Glucose; CRP, C-reactive protein.