Intent-to-Treat Linear Mixed Model Results for the Blom Rank Transformed Primary and Secondary Outcomes (the Comparator is always the Attention Control Group), N = 620.

*pNotes: Cell entries are Cohen's d statistics (95% confidence intervals) for visual speed of processing training on the baseline to one-year changes between each training group vs. the attention control group on the Blom rank transformed (separately within age strata) scores, and are directly interpretable as standardized effect sizes. Cell p values are from Dunnett test comparisons to the attention control group. None of the age band main effects were statistically significant, and none of the interaction terms involving age band were statistically significant.