[Self-report assessment: questionnaires and sleep logs/diaries].

Insomnia is defined by a repeated difficulty with sleep initiation, duration, consolidation, or quality that occurs despite adequate time and opportunity for sleep and results in some form of daytime impairment in ICSD-2. An adequate evaluation of persistent insomnia requires detailed historical information as well as medical, psychological, and psychiatric assessment. Sleep logs, questionnaires, and other self-reports devices are useful to gather preliminary information about the nature of insomnia and its potential contributing factors. The Pittsburgh Sleep Quality Index has been applied in a variety of settings to measure sleep quality. Sleep logs/diaries are widely employed in clinical research and practice. These measures can be used to guide and enhance the sleep and medical histories taken by the clinician.