anxiety chronic conditions depressive symptoms sleep subjective age Adult Age Distribution Humans Longitudinal Studies Male Middle Aged Risk Factors Sleep Sleep Initiation and Maintenance Disorders United States Aged Aged, 80 and over Aging Anxiety Chronic Disease Depression Female Health Surveys
Chronological age is commonly used to explain change in sleep. The present study examines whether subjective age is associated with change in sleep difficulties across middle adulthood and old age.