The relationship between the long-term false-recent rate (ε) and the pre-set optical density cut-off (<i>C</i>) in the ZVITAMBO Trial.

<p>The value of ε was estimated as the proportion of cases with a BED OD<<i>C</i> among women tested at <i>T</i> = 12-months postpartum, given that they had previously provided a positive HIV test at baseline. Error bars indicate the 95% confidence intervals.