th inline">\(T\)</span> the recency cutoff time), and False Recent Rate (FRR), denoted <span class="math inline">\(\beta_T\)</span>. The explicit time cutoff <span class="math inline">\(T\)</span> was introduced by Kassanjee et al. <em>Epidemiology</em>, 2012.<a href="#fn1" class="footnote-ref" id="fnref1"><sup>1</sup></a> to differentiate between ‘true recent’ and ‘false recent’ results. Also see Kassanjee, McWalter, Welte. <em>AIDS Research and Human Retroviruses</em>, 2014.<a href="#fn2" class="