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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: HIV Med. 2014 Jan 26;15(7):406–416. doi: 10.1111/hiv.12124

Table A13.

Rate of first virological failure per 1000 person-years by income

Income Virological failure (n) Person-years (1000’s) Crude rate (95% CI) (per 1000 person years)
Low/middle 128 3.884 32.954 (27.712, 39.188)
High 302 8.265 36.54 (32.642, 40.902)

Virological failure = 5000 copies/mL; LLV ≤ 5000 copies/mL.

The analysis included all patients who had achieved undetectable viral load (≤ 50 copies/mL) within 1 year of starting combination antiretroviral therapy (cART) and prior to subsequent viral failure, and excluded periods off treatment or on mono/duo for > 7 days.