Fig. 2From: Quantitative clinical and autoimmune assessments in stiff person syndrome: evidence for a progressive disorderComparison of CSF anti-GAD antibody titers within a 2-year period. While there is a titer drop in the 2 year-period (mean 24,013 IU/ml vs 19,855 IU/ml) this difference is not statistically significant (p = 0,55 two-tailed paired t-test)Back to article page