Figure 4:

Secondary cognitive outcomes included the Delis Kaplan Executive Function System (DKEFS) Letter and Category Fluency. For legend, see Figure 2.

Figure 4A: Longitudinal changes within each amplitude. For the Letter Fluency (A1), the 600 mA arm had no change in performance, but the 700 and 800 mA arms had impaired performance. For Category Fluency (A2), the 700 mA arm had no change in performance, but the 600 and 800 mA arms had impaired performance.

Figure 4B: Amplitude contrasts at each assessment: Amplitude arms did not have Letter (B1) or Category (B2) Fluency differences at the mid- or post-ECT assessments.

Figure 4C: Sex differences: Male and female subjects did not have Letter (C1) and Category (C2) Fluency performance differences.

Figure 4D: Pulse width differences. Brief pulse width (1.0 ms) was associated with worse Letter Fluency (D1) at the mid-ECT assessment, but the post-ECT assessment did not demonstrate Letter Fluency differences. Brief (1.0) and ultrabrief (0.3) pulse widths did not have Category Fluency (D2) differences.