Heat map of variance sensitivity for one participant (10% uncertainty, 2,000 samples) depicting the relative importance of each parameter for each output in the model. Columns represent model parameters as shown in appendix a, Table A1. Rows correspond to different cost function terms [output 1 is HPV, output 2 is HPL, output 3 is HPH, output 4 is HP, output 5 is SAP, output 6 is DAP, output 7 is SAPT, output 8 is DAPT, output 9 is log(Cost)]. Lighter color cell depicts greater importance.