Association Between Sleep Disturbances and Frailty: Evidence From a Population-Based Study.

Objective: To explore the association between both self-reported quality and quantity sleep characteristics and frailty status in a large non-sex-specific population of older individuals in Greece.

Design: Cross-sectional study.

Setting And Participants: In total, 1984 older individuals (≥65 years old) were drawn from the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD).

Frailty and Prodromal Parkinson's Disease: Results From the HELIAD Study.

Background: To investigate the association between frailty, Parkinson's disease (PD), and the probability of prodromal Parkinson's disease (prodromal PD) in Greek community-dwelling older individuals.

Methods: Parkinson's disease diagnosis was reached through standard clinical research procedures. Probability of prodromal PD was calculated according to the International Parkinson and Movement Disorder Society's research criteria for PD-free participants.