While SCA1 was not significantly correlated with a unique pattern, other possible SCAs can be linked and absence of a vertical nystagmus following horizontal head shaking reduces the likelihood of an SCA6 diagnosis, while the absence of a square wave pattern during fixation reduces the likelihood of SCA3. One possible system for the differential diagnosis of SCA types is to record the progression of symptoms and use Bayesian probability to build a predictive model, or a Bayesian classifier, that compares the observed data to trends like those described above to find the likelihood of each diagnosis to be correct. One such Bayesian classifier was shown to accurately predict 78% of SCA cases out of a cohort with known types of SCA. The sensitivity and specificity for SCA1 within this model was 76.9% and 98.2% respectively. Regional variance in prevalence, symptoms and clinical assessment might still limit the use of this system on large scales, though the system may implemented by individual clinics using their own regional data. Management There is currently no cure for Spinocerebellar ataxia type 1. However, some of its symptoms may be managed with physical, occupational or speech therapies, lifestyle and dietary changes, or with medications. Managing symptoms will not prevent the disease from progressing but can be important for maintaining quality of life. It is important to note, however, that many disorders that cause ataxia and related symptoms exist, and that management strategies that work for some, such as vitamin E supplements for certain acquired ataxias, will not work for hereditary ataxias like SCA1 and can be dangerous to a person's health. Small cohort studies have shown that individuals with cerebellar disorders recover coordination and have lower SARA scores regardless of stage or severity of their ataxia before therapy when they are regularly participating in physiotherapy or exergaming over individuals who are not. These studies suggest that multidomain physical therapy, more focused coordinative training, and exergaming routines all produced improvements in SARA scores equivalent to at least one year of normal progression, 2.2 points or more on average, over the course of several weeks. While these results are promising, larger scale studies may be necessary to validate these results. Overall, physical therapy for individuals with ataxia has modest evidence supporting its efficaciousness, but current practice uses custom treatments without a standard decision making procedure between clinics, which limits the ability to reproducibly assess the quality of