O.K. led the data compilation and hazard index formulation in communication with J.H., M.L. and J.A., and wrote the first draft of the manuscript.
Prior to index formulation, gridded (12.5 km resolution) GIC data were re-projected and class-specific values (5, 15 and 35%) were assigned for the original class intervals (0 10, 10 20, and over 20%).
The paper also describes maximum possible crimpability assessment of these mitral stent designs using a crimpability index formulation based on the various stent design parameters.
Twenty methods are reviewed for their goal and scope, developer, target application, required data, considered aspects and parameters, exposure assessment, hazard extent estimation, index formulation, and output data.
The following formulation of SSIM index was used in this study: operatorname{SSIM}(A,B) = frac{(2mu_{A}mu_{B} + C_{1})(2sigma_{AB} + C_{2})}{(mu_{A}^{2}+mu _{B}^{2}+C_{1})(sigma_{A}^{2}+sigma_{B}^{2}+C_{2})}, (52) where (mu_{A}) and (mu_{B}) are the estimated mean intensity along the A, B directions and (sigma_{A}) and (sigma_{B}) are the standard deviations, respectively.
Conversely, TLc is the most sensitive input variable in the L index formulation.
The reference point chosen here corresponds to an ad-hoc formulation of Fitts' index of difficulty Id.
Both a three- and two-index formulation are discussed.
Owing to the patchiness of environmental variables used in hazard index formulations, minor differences in areal coverage existed between the indices.
