Retention: >=2 HIV primary care visits, >90 days apart, in the year

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>=2 HIV primary care visits per calendar year, >90 days apart, among those with >=1 visit after cohort enrollment and before the end of the study period (observations in the year of cohort initiation or year of patient death are excluded); CD4 and HIV-1 RNA measurement dates were used as visit proxies in British Columbia, Argentina, and Peru. [Ford MA, and Spicer CM. Monitoring HIV care in the United States : indicators and data systems. Washington, D.C.: National Academies Press; 2012.]
ART use: On ART >=1 month in the year

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>1 month on a regimen consisting of 3 or more active antiretroviral agents per calendar year, among those with >=1 HIV primary care visit in the calendar year. [Valdiserri RO, Forsyth AD, Yakovchenko V, and Koh HK. Measuring what matters: development of standard HIV core indicators across the U.S. Department of Health and Human Services. Public Health Rep. United States; 2013;128(5):354-9.]
Viral suppression: VL < 200 copies/mL at last measure in the year

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HIV-1 RNA viral load measurement < 200 copies/mL at final viral load measure in the calendar year, among those with >=1 HIV primary care visit in the calendar year. [Valdiserri RO, Forsyth AD, Yakovchenko V, and Koh HK. Measuring what matters: development of standard HIV core indicators across the U.S. Department of Health and Human Services. Public Health Rep. United States; 2013;128(5):354-9.]
CD4 at entry: Earliest CD4 count within 6 months of entry to cohort

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Earliest CD4+ count within 6 months of (before or after) enrollment in the cohort, excluding those with any recorded ART use or HIV-1 RNA viral load < 200 copies/mL prior to the eligible CD4+ counts. [Althoff KN, Gange SJ, Klein MB, Brooks JT, Hogg RS, Bosch RJ, Horberg MA, Saag MS, Kitahata MM, Justice AC, Gebo KA, Eron JJ, Rourke SB, Gill MJ, Rodriguez B, Sterling TR, Calzavara LM, Deeks SG, Martin JN, Rachlis AR, Napravnik S, Jacobson LP, Kirk GD, Collier AC, Benson CA, Silverberg MJ, Kushel M, Goedert JJ, McKaig RG, Van Rompaey SE, Zhang J, and Moore RD. Late presentation for human immunodeficiency virus care in the United States and Canada. Clin Infect Dis. United States; 2010;50(11):1512-20.]




All <30 30-49 >=50
IDU = Injection drug user
MSM = Men who have sex with men

2012

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