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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

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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