Multiple regression analyses identified uniquely contributing factors to the prediction of each composite (Table 5). When examining the relative contribution of all significant factors to the prediction of Attention/Working Memory, Production, and Upper Limb Motor Composite scores, it was the ataxia score that consistently accounted for a significant amount of variance (Figure 5). By contrast, total lifetime alcohol and TDP levels were independent and significant predictors of Immediate Memory and Delayed Memory scores (Figure 6). These results did not change when age was added to the prediction model.
