Comparison of the mass distributions of Lupus and USco to that of CrA, following the MC analysis proposed by Andrews et al. (2013). p_ϕ is theprobability that the synthetic population drawn from the comparison sample (Lupus and Upper Sco) and the reference sample come from the same parent population. f(< p_ϕ) is the cumulative distribution for p_ϕ resulting from the logrank two-sample test for censored datasets after 10⁴ MC iterations.