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PICO
Question: Among 6- to 11-year-old Canadian children, is there an association between low levels of vitamin D and dental caries?
Question type: Harm/Causation
Study design: Cross-sectional
To determine if serum levels of 25-hydroxy vitamin D (25(OH)D) were associated with dental caries in Canadian children, investigators analyzed nationally representative data collected during the Canadian Health Measures Survey from 2007 to 2009. For the study, children aged 6–11 years were examined by dentists to determine (1) presence or absence of dental …
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