Association between socioeconomic status and dental caries among Chinese preschool children: a cross-sectional national study.

BMJ Open · 2021 · PMC8144044 · PMID 34020971

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an increasing trendno p-value reported

In addition, the prevalence of dental caries and dental pain, and mean dmft in rural areas were higher than those in urban areas, and there was an increasing trend with age, parental education and household income ( table 1 ).

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