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Athens insomnia scale Sleep induction: 0: No problem: 1: Slightly delayed: 2: Markedly delayed: 3: Very delayed or did not sleep at all Awakenings during the night: 0: No problem: 1: Minor problem: 2: Considerable problem: 3: Serious problem or did not sleep at all Final awakening: 0: Not earlier: 1: A little earlier: 2: Markedly earlier: 3 ...
Each item is weighted on a 0–3 interval scale. The global PSQI score is then calculated by totaling the seven component scores, providing an overall score ranging from 0 to 21, where lower scores denote a healthier sleep quality. Traditionally, the items from the PSQI have been summed to create a total score to measure overall sleep quality.
The respiratory disturbance index (RDI)—or respiratory distress Index—is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory distress events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs). [1]
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The Stanford Sleepiness Scale (SSS), developed by William C. Dement and colleagues in 1972, is a one-item self-report questionnaire measuring levels of sleepiness throughout the day. The scale has been validated for adult populations [ 1 ] and is generally used to track overall alertness at each hour of the day.
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