Healthy older adults' sleep predicts all-cause mortality at 4 to 19 years of follow-up.

Objective: Evidence concerning whether sleep disturbances in older adults predict mortality is mixed. However, data are limited to self-reported sleep problems and may be confounded with other comorbidities. We examined whether electroencephalographic (EEG) sleep parameters predicted survival time independently of known predictors of all-cause mortality.

Two-Year Survival in Patients With Mixed Symptoms of Depression and Cognitive Impairment: Comparison With Major Depression and Primary Degenerative Dementia.

The authors compared the 2-year survival rates of patients with 1) mixed clinical presentations (n=58), 2) major depression without cognitive impairment (n = 51), and 3) primary degenerative dementia without depression (n = 34). Two-year survival rates were 100% in healthy controls, 91% in patients with major depression, and 76.1% and 78.