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A revised SAS macro for maximum likelihood estimation of prevalence ratios using the COPY method

https://doi.org/10.1136/oem.2008.043018

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    Footnotes

    • Funding This project was completed as part of the official duties of the authors as employees of the United States government.

    • Competing interests None.

    • Ethics approval The study was approved by the NIOSH Human Subjects Review Board in Cincinnati, Ohio, USA.

    • Disclaimer The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the National Institute for Occupational Safety and Health.

    • Provenance and peer review Not commissioned; externally peer reviewed.