The Cormack-Jolly-Seber Estimates are unique for each population and period, and therefore fit the data optimally and provide a standard for evaluating the survival estimates from a selected model. The SURPH vs CJS Estimates plot is illustrated below. The x-axis is for the CJS estimates, and the y-axis is for the SURPH estimates for the selected model. The green 45 degree line corresponds to the optimal condition of the two sets of estimates from both being equal; the distance from the green line corresponds to the discrepancy between the two estimates.
