Randomization led to 20 participants each in the intervention and control groups (Table 2).
Two intervention subjects withdrew before beginning the intervention (house fire; increased
social commitment). One control discontinued before 8 week follow up (failed to return
calls), and 2 additional controls discontinued before 6 month follow up (discomfort with
cognitive testing; medical issues). There were no significant demographic or cognitive
differences between those who completed the study versus those who withdrew.