diaries recorded over a period of 7 to 14 days by the patient can be used to
measure the following sleep quality indicators (abnormal values in brackets):
getting to or staying asleep; non-restorative; affecting functioning (> 3
days per week, > 1/12 )
onset latency (SOL) (> 30mins)
after sleep onset (WASO) (> 30mins)
sleep time (TST) (<6; >9 hours)
efficiency (SE) (<85%)
Sleep onset latency (SOL) : Time from the decision to sleep to the onset of sleep.
Wake time after sleep onset (WASO) : Time spent awake from sleep onset to final awakening.
Total sleep period (TSP): Time from sleep onset to final awakening from the main sleep period of the day.
Total sleep time (TST) : Total sleep period minus the time spent awake during the sleep period
Sleep efficiency (SE) : Ratio of total sleep time to nocturnal time in bed