Exploring the Construct of Subjective Sleep Quality in Patients With Insomnia

Jessica A. Hartmann*, Colleen E. Carney, Angela Lachowski, Jack D. Edinger

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Objective: The construct of subjective sleep quality is poorly understood. One widely used measure of subjective sleep quality is the Pittsburgh Sleep Quality Index (PSQI). The role of psychiatric illness in the association between the PSQI and a prospective, sleep diary-derived sleep quality measure (SDSQ) was investigated plus the degree to which the PSQI may reflect mood states. Method: A sample of 211 insomnia patients (International Classification of Sleep Disorders, Second Edition) divided by the presence or absence of a comorbid psychiatric disorder (DSM-IV-TR) and recruited between January 2004 and February 2009, completed the PSQI (primary outcome) and 2 weeks of sleep diary monitoring. First, correlations between PSQI and SDSQ were compared; second, regression analyses were used to investigate whether the association between PSQI and SDSQ depends on diagnostic status; third, the differences in sleep quality between the groups, plus the contribution of anxiety and depression in explaining these differences, were explored. Results: The correlation between PSQI and SDSQ was significant only in the nonpsychiatric group (P
Original languageEnglish
Pages (from-to)E768-773
JournalJournal of Clinical Psychiatry
Issue number6
Publication statusPublished - Jun 2015


  • Sleep Disorders

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