They established a discriminant model based on Z = b 1 X 1 + b 2 X 2 , in which coefficients b 1 = 0.00769, b 2 = 0.0810, and Z 0 = 0.472 (discrimination threshold). In this model, Z > Z 0 is defined as non-AMS and Z < Z 0 is defined as AMS. The discriminant model had a high sensitivity (93.9%) and a high accuracy (92.2%) for the prediction of HAPE.