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UNITED STATES OF AMERICA Before the SECURITIES AND EXCHANGE COMMISSION - ncbi nlm nih

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The document discusses the appropriate use of statistical methods for analyzing categorical data in biomedical research and pathology laboratory practice. It emphasizes the importance of correctly handling nominal and ordinal data, particularly in the context of counts and proportions. The article provides guidance on estimating single proportions, comparing two or more proportions, and highlights the limitations of small sample sizes. It also covers statistical techniques such as confidence intervals, chi-square tests, and Fisher's exact test, while stressing the need for careful planning and standardization in investigations.

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