The status and associated factors of early childhood caries among 3- to 5-year-old children in Guangdong, Southern China: a provincial cross-sectional survey.

BMC Oral Health · 2020 · PMC7517683 · PMID 32977784

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highly significantno p-value reported

Moreover, lack of toothbrushing was a risk factor for ECC [ 43 ], and irregular brushing at 18 months of age was a highly significant predictor of developing ECC [ 44 ].

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an increasing trendno p-value reported

The prevalence and mean dmft in rural areas were higher than those in urban areas, and there was an increasing trend with age.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.