Abstract
This randomized clinical trial analyzed whether a personalized cognitive stimulation based on the individual's preexisting cognitive levels may be more effective in the short and long terms than a standard cognitive stimulation program. In total, 288 older adults were randomized into an intervention group and a control group, stratified according to their cognitive levels. There were significant differences between groups, with a small effect size at postintervention (10 weeks), follow-up I (26 weeks), and follow-up II (52 weeks) (P < .001, 0.2 <r < 0.4) and in the cognitive category (P < .001). The personalization of cognitive stimulation is effective to maintain normal cognitive functioning and to delay cognitive decline.