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Step 1) identify persons meeting broad CCP eligibility criteria: Using information from the Registry, we identified persons as eligible for enrollment in the CCP if they were 1) newly diagnosed with HIV from December 1, 2008 to March 31, 2013; 2) out of medical care, defined as lacking CD4 and VL laboratory monitoring for any nine-month post-diagnosis period during December 1, 2007 to March 31, 2013; 3) treatment naïve, defined as ever having a CD4 count <200 reported as of March 31, 2013, but not initiating antiretroviral treatment [ART] (never having a ≥1-log drop in VL within 3 months, or an unsuppressed VL [>200 copies/μL] followed by a suppressed VL [≤200 copies/μL]) as of the date of a CD4 count <200 [25]; 4) exhibiting poor ART adherence as of March 31, 2012, defined as not achieving VLS or not having any VL tests reported in the first 12 months after ART initiation (a ≥1-log drop in VL within 3 months, or an unsuppressed VL followed by a suppressed VL) [25]; 5) experiencing viral rebound (a suppressed VL followed by 2 consecutive unsuppressed VL tests in the 12 months following the suppressed VL, from December 1, 2007 to March 31, 2013); or 6) registering a high VL (≥10,000 copies/μL) from December 1, 2008 to March 31, 2013.
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