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RESEARCH: Evan Wood, Thomas Kerr, Brandon D L Marshall, Kathy Li, Ruth Zhang, Robert S Hogg, P Richard Harrigan, and Julio S G Montaner Longitudinal community plasma HIV-1 RNA concentrations and incidence of HIV-1 among injecting drug users: prospective cohort study BMJ 2009; 338: b1649 [Abstract] [Full text]

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Typo?

John T. Brooks   (23 May 2009)

Typo? 23 May 2009
John T. Brooks, Medical epidemiologist CDC, 30333 Send response to journal: Re: Typo?	Hi all, What a terrific paper! Thanks. One comment: in the abstract, the final sentence of the Results subsection reads: "When the follow-up period was limited to observations after 1 January 1988 (when the median plasma HIV RNA concentration was <20 000 copies/ml), the median viral load was no longer statistically associated with HIV incidence (1.70 (0.79 to 3.67, P=0.175), per log(10) increase)." I presume the date should be 1 January 1998? The same date (1 January 1988) is also presented in the Results on the manuscript's 3rd page under the subsection "HIV-1 RNA and HIV Incidence". I've certainly made this kind of mistake before (ahem, more than once even) and am only checking to make sure I didn't misunderstand something in the Methods. -john John T. Brooks, M.D. Leader, Clinical Epidemiology Team Division of HIV/AIDS Prevention, NCHHSTP, CDC 1600 Clifton Road NE, MS E-45 Atlanta, GA 30333 phone: 404-639-3894 fax: 404-639-6127 email: zud4@cdc.gov Competing interests: None declared