Sleep quality among inpatients of Spanish public hospitals.

Sleep is a complex process and is needed both in health and illness. Deprivation of sleep is known to have multiple negative physiological effects on people's bodies and minds. Despite the awareness of these harmful effects, previous studies have shown that sleep is poor among hospitalised patients.

Detection of factors influencing circadian rhythms on Intensive Care inpatients and hospitalization: Protocol for an observational study.

Aims: Identify the prevalence of circadian health disorders in ICU and hospitalized patients. Stablish the relationship of the circadian system with light, temperature, noise and nursing activities.

Background: Commonly, self-assessment through subjective questionnaires is used for research about sleep quality.