Digital Stimulation and Anxiety and Sleep Quality in Intensive Care Unit Patients

Richards-Campbell Sleep Questionnaire (RCSQ)

The Richard-Campbell Sleep Scale (RCSS) is a scale developed by Richards in 1987 to assess the quality of nocturnal sleep in patients. Adapted into Turkish by Özlü and Özer, and subsequently validated and its reliability studied, the scale consists of six items that evaluate the depth of nocturnal sleep, time to fall asleep, frequency of awakenings, duration of wakefulness, quality of sleep, and ambient noise level. Each item is evaluated on a visual analog scale ranging from 0 to 100. A score of "0-25" indicates very poor sleep, while a score of "76-100" indicates very good sleep. As the scale score increases, the patients' sleep quality also improves. The Cronbach's α value of the scale was determined to be 0.82.

Hospital Anxiety and Depression Scale (HADS)

Developed by Zigmond and Snaith (1983) to determine a patient's risk of anxiety and depression, and to measure their level and severity, the scale's validity and reliability in Turkish were established by Aydemir et al. (1997). The scale contains 14 questions in total, with odd numbers measuring anxiety and even numbers measuring depression. The scale consists of two subscales: Anxiety (HAD-A) and Depression (HAD-D). In the validity and reliability study, the cutoff score for HAD-A was found to be 10/11, and for HAD-D, 7/8. Accordingly, scores above these points are considered at risk. The scale is a four-point Likert type, with a total score ranging from 0 to 42.