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Fig. 3 | BMC Oral Health

Fig. 3

From: Serum 25-hydroxyvitamin D is negatively associated with severe periodontitis: a cross-sectional study

Fig. 3

The correlation between serum 25-hydroxyvitamin D and severe periodontitis. Association between serum 25-hydroxyvitamin D and severe periodontitis. A threshold, nonlinear association between serum 25-hydroxyvitamin D and severe periodontitis was found in a generalized additive model (GAM, P < 0.01). Red line represents the smooth curve fit between variables. Blue lines represent the 95% of confidence interval from the fit

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BMC Oral Health

ISSN: 1472-6831

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