Sleep Quality
The Pittsburgh Sleep Quality Index (PSQI) is an index widely used to
measure sleep quality. The PSQI is a self-reported questionnaire that
includes 19 questions that when scored, are separated into seven
domains. The seven domains are; perceived sleep quality, sleep latency,
sleep duration, habitual sleep efficiency, sleep disturbances, sleep
medications; and daytime dysfunction. Each domain is scored from 0-3 and
a total score ranging from 0-21 can be obtained. A total score of; 0-4
indicates a good sleep quality, 5-10 indicates poor sleep quality and
scores above 10 indicate a possible sleep disorder. This index has been
translated to Turkish and validated by Agargun et al [23].