Establishing pathological cut-offs for lateral ventricular volume expansion rates

Establishing pathological cut-offs for lateral ventricular volume expansion rates

Background A percent brain volume change (PBVC) cut-off of -0.4% per year has been proposed to distinguish between pathological and physiological changes in multiple sclerosis (MS). Unfortunately, standardized PBVC measurement is not always feasible on scans acquired outside research studies or academic centers. Percent lateral ventricular volume change (PLVVC) is a strong surrogate measure of ...

Establishing pathological cut-offs of brain atrophy rates in multiple sclerosis.

OBJECTIVE To assess whether it is feasible to establish specific cut-off values able to discriminate 'physiological' or 'pathological' brain volume rates in patients with multiple sclerosis (MS). METHODS The study was based on the analysis of longitudinal MRI data sets of patients with MS (n=206, 87% relapsing-remitting, 7% secondary progressive and 6% primary progressive) and healthy control...

Choosing cut-offs for NT-proBNP

Expansion Trees with Cut

Herbrand's theorem is one of the most fundamental insights in logic. From the syntactic point of view it suggests a compact representation of proofs in classical first-and higher-order logic by recording the information which instances have been chosen for which quantifiers, known in the literature as expansion trees. Such a representation is inherently analytic and hence corresponds to a cut-f...

Establishing meaningful cut points for online user ratings Establishing meaningful cut points for online user ratingsEstablishing meaningful cut points for online user ratings

Subjective perceptions of websites can be reliably measured with questionnaires. But it is unclear how such scores should be interpreted in practice, e.g. is an aesthetics score of 4 points on a 7-point-scale satisfactory? The current paper introduces a ROC-based methodology to establish meaningful cut points for the VisAWI (Visual Aesthetics of Websites Inventory) and it’s short form the VisAW...