Model 1: Adjusted for sex, age, education, time lapse between sleep assessment and SOL-INCA visit; Model 2: Model 1 and global vascular risk score, depressive symptoms, report of sleep medication use frequency, and field center; B-SEVLT: Brief Spanish English Verbal Fluency Test; WF: Word Fluency; DSS: Digit Symbol Substitution. For Trails A & B higher values indicate worse function.