Abbreviations: Paralysis: cP = complete Paraplegia, iC = incomplete Paraplegia, cT = complete Tetraplegia, iT = incomplete Tetraplegia; NLI = Neurological Level of Injury; MV = mean IGF-1 serum levels of the first 24 h; A_DB = dichotomized initial AIS = ASIA (American Spinal Injury Association) Impairment Scale, 0 = A, 1 = B-D; AGE = age of the subjects. Here, IGF1 is linked to quadriplegia.