Gaussian graphical model with least absolute shrinkage and selection
operator regularization. Latent dimensions were estimated with Markov chain
Monte Carlo simulation. Nodes on the right side of the visualization load highly
on dimension 1 and nodes toward the top load highly on dimension 2. Node
location reflects variable loading on the two latent dimensions. Positive
associations are depicted as blue. Edge width reflects the magnitude of
association and edge saturation (i.e., darkness) reflects the likelihood of the
association. Node colors reflect artificial groupings from the legend. BNT,
Boston Naming Test; CDR, Clinical Dementia Rating; DSF & DSB, Digit Span
Forward and Backward; FAQ, Functional Activities Questionnaire; LM-II, Logical
Memory Delayed Recall; MMSE, Mini-Mental State Examination; NAB SD & LD,
Neuropsychological Assessment Battery List Learning Test, Short and Long Delay;
NfL, neurofilament light; P-tau181, hyperphosphorylated tau; TMT-A
& B, Trail Making Test, Parts A and B; Ttau, total tau