Figure 3From: Syringomyelia: determining risk and protective factors in the conformation of the Cavalier King Charles Spaniel dog MRI SM affected younger than three versus SM clear over five and cephalic index. Graph illustrating relationship between cephalic index and the probability of that individual being SM affected under the age of three versus SM clear over the age of five. This figure shows increasing cephalic index to be a significant risk factor in developing SM before 3Â years of age when comparing to dogs that are clear over 5Â years of age.Back to article page