... cause of Author and of age of of ICU stay Number sleep year published Method patients patients ICU type (days) Main noise sources ventilated disruption?Hilton, 1976 [24] Polysomnography + continuous ... modification: they must be easy toimplement and they must not diminish the safety of thepatients. Both noise and light are often the primary pairedconcerns of behaviour modification.A randomised ... majorfactor in sleep disturbance, in terms of sleep evaluationmethod, publication year, type of ICU, age of patients,number of patients and duration of stay.Jones and colleagues [17], according to...