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Fig. 2 | BMC Oral Health

Fig. 2

From: The association between dietary vitamin C intake and periodontitis: result from the NHANES (2009–2014)

Fig. 2

Association between Vitamin C and Periodontitis.Noted: A threshold, nonlinear association between Vitamin C (mg) log10 transform and Periodontitis was found (P = 0.01) in a generalized additive model(GAM). A solid rad line represents the smooth curve fit between variables. Blue bands represent the 95% of confidence interval from the fit. All adjusted for Age; Sex; Race; Had at least 12 alcohol drinks/one year?; BMI; Hypertension; Hyperlipidemia; Education level; Marital status; Annual household income; Diabetes history; General health condition; Number of flossing/a weeks; Sleep disorder; Smoked at least 100 cigarettes in life; Energy

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