t-test results of the anamnestic data of the two groups: mean, SD, t value and P value. DD. = Dysphonetic dyslexia, NSRD = Non-Specific Reading Delay, N.S. = number of subjects, SD = standard deviation, FSIQ = full scale intelligent quotient, VIQ = verbal intelligent quotient, PIQ = performance intelligent quotient, S.L.D. = specific language disorder, Dysorth. = Dysorthography, Dysgr. = dysgraphia, Dyscal. = dyscalculia, Com. = comorbidity, T.O.C. = type of comorbidity, S.T. = speech therapy, T.O.S.T. = type of speech therapy, S.T.D. = speech therapy duration, F.Q. = father qualification, M.Q. = mother qualification.