Figure 1: Diagnostic performance of mortality prediction indices MPI4 (dash-dotted line), MPI5 (dashed line), and MPI6 (continuous line) for identification of mortality in sea turtles (n = 25 dead and 118 live sea turtles). The diagonal (dotted) line indicates the area under the curve = 0.50 (a non-informative test). Arrow shows cut-off value of a score ≥8 for MPI6 with highest sensitivity = 88.0 and specificity = 80.5%. From: Development and evaluation of three mortality prediction indices for cold-stunned Kemp's ridley sea turtles (Lepidochelys kempii) Conserv Physiol. 2013;1(1). doi:10.1093/conphys/cot003 Conserv Physiol | © The Author 2013. Published by Oxford University Press on behalf of The Society for Experimental Biology.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted distribution and reproduction in any medium, provided the original work is properly cited.
Figure 2: Frequency-distribution of MPI6 mortality prediction index scores in 118 sea turtles that survived and 25 sea turtles that died. The horizontal line across the MPI6 score indicates the cut-off value used to predict mortality (yes/no). Using a cut-off value ≥8, the calculated sensitivity = 88% and the specificity = 80.5%. From: Development and evaluation of three mortality prediction indices for cold-stunned Kemp's ridley sea turtles (Lepidochelys kempii) Conserv Physiol. 2013;1(1). doi:10.1093/conphys/cot003 Conserv Physiol | © The Author 2013. Published by Oxford University Press on behalf of The Society for Experimental Biology.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted distribution and reproduction in any medium, provided the original work is properly cited.
Figure 3: Relationship between mortality proportion, positive predictive value (PPV), and negative predictive value (NPV) for MPI6 (when the sensitivity = 88% and specificity = 80%). From: Development and evaluation of three mortality prediction indices for cold-stunned Kemp's ridley sea turtles (Lepidochelys kempii) Conserv Physiol. 2013;1(1). doi:10.1093/conphys/cot003 Conserv Physiol | © The Author 2013. Published by Oxford University Press on behalf of The Society for Experimental Biology.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted distribution and reproduction in any medium, provided the original work is properly cited.