Comparison of the association between different dietary pattern scoring indices and periodontitis and their population heterogeneity.

This study found that the association between DII scores and periodontitis was not entirely significant from the perspective of cross-sectional survey (the risk of periodontitis between male participants with the DII score in Quartile 2 and Quartile 1: OR = 1.26, 95%CI: 0.99–1.62; the risk of periodontitis between female participants with the DII score in Quartile 4 and Quartile 1: OR = 1.13, 95%CI: 0.96–1.33), but were both significant in long-term follow-up, which was stronger than the cross-sectional evidence.

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