Figure 4.

${\widehat{\Lambda }}_0\left(\tau \right)$ and ${\tilde{\Lambda }}_0\left(\tau \right)$ versus true Λ₀(τ) for the 6000 simulations with a Weibull(0.5, 0.2) baseline contact interval distribution. For each simulation and each estimator, a circle is shown for the 10^th, 25^th, 50^th, 75^th, and 90^th percentiles of all possible contact intervals. The smoothed means were calculated using cubic smoothing splines.