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Prevalence of diabetes in New Zealand general practice – the influence of ethnicity and social deprivation
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    Cross sectional studies- Odds ratios or prevalence ratios

    I read with interest the article by Joshy et al on prevalence of diabetes. The authors aimed at assessing the influence of deprivation on the prevalence of diabetes and have used cross-sectional study design. The authors estimated odds ratios using logistic regression. There are two fundamental interpretative issues in using odds ratio as a measure of association in cross sectional studies.

    The first issue is...

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    Conflict of Interest:
    None declared.