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Visual analog scales (VAS) and diary cards are used to measure changes in patients' sleep quality in clinical trials and practice. In this study we compared the 2 methods for assessing changes in sleep quality in patients with insomnia.
22 mar 2023 · A study by Casement and colleagues 39 reported a similar pattern of findings in young adults living in a controlled hospital environment who underwent both insufficient sleep (4 hours/night for 12 days) and adequate sleep (8 hours/night for 12 days) interventions.
15 lut 2023 · Studies implemented the sleep regularity index (SRI), the standard deviation (SD) of total sleep duration, the SD of midpoint sleep time (ie, the time midway between sleep onset and offset times), interdaily stability of sleep-wake times, the sleep timing questionnaire (STQ), and other measures.
11 lis 2002 · Sleep stages are based on the EEG and consist of 5 stages (Stages 1, 2, 3, 4, and rapid eye movement [REM] sleep). Stages 1-4 are collectively called non-REM sleep (NREM). Adults usually cycle through the NREM stages in consecutive order and then into REM about every 90 minutes throughout sleep.
30 lis 2020 · There are four sleep cycle stages in total, including light sleep, deep sleep, and rapid eye movement (REM). Learn how they affect the body.
30 paź 2023 · On average, how many hours do you sleep each night? For most healthy adults, guidelines suggest at least seven hours of slumber. But these are general recommendations and not strict rules. "Some people need less than seven hours, while others might need more," says Eric Zhou with the Division of Sleep Medicine at Harvard Medical School.
Subjective measures of sleep include sleep questionnaires, sleep diaries/logs, rating scales on the estimated level of sleepiness and hardware devices. These measures can provide a broad overview of the level of hours of sleep, the consistency in sleep, sleep propensity and insomnia.
