Hi Rick, Thank you for your response. I should have clarified. Yes, once the data is transformed, I will be taking the arithmetic mean using PROCSURVEYMEANS. I will be then calculating the geometric mean from that point. From a practical standpoint, I was just wondering if there was any difference in the SAS code when doing a log vs log+1 transformation since most guidance out there uses a log transformation -> arithmetic mean -> calculation of geometric mean I am using this guidance... https://support.sas.com/rnd/app/stat/examples/SurveyGeoMean/new_example/stat_webex.pdf
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