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Article
February 2, 1994

Use of Anabolic-Androgenic Steroids: We Are Talking Prevalence Rates-Reply

Author Affiliations

Pennsylvania State University University Park, Pa

JAMA. 1994;271(5):348. doi:10.1001/jama.1994.03510290029028
Abstract

In Reply.  —Actually the prevalence rates in our article were calculated with weighted data. Therefore, the numerator is an estimate of the total number of AAS users in population P divided by the total population P. With that comment aside, the issue of using rate as a generic term for both rates and proportions has not been settled, almost 20 years after the Elandt-Johnson article.1 An epidemiology instructional guide from the Centers for Disease Control and Prevention2 and textbooks such as Lilienfeld and Lilienfeld3 and Mausner and Kramer4 define "prevalence rate" of a given disease as the proportion of existing cases at a specified time in the population at that specified time. Also, it is common to speak of "participation rate" or "response rate" to define the proportion of subjects who participated in a survey or a study.Ms Sigurdson and Dr Hoque suggest that we

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