Quantifying subjective assessment of sleep and life‐quality in antidepressant‐treated depressed patients

This study sought to establish a method of quantifying subjective perceptions of sleep against perceptions of life‐quality and mood, using amended versions of the Pittsburgh sleep diary (PghSD) and quality of life of insomniacs (QOLI) questionnaire. Diaries and questionnaires were self‐completed in participants' homes. Outpatients with a DSM‐IV diagnosis of major depressive disorder were compared with a healthy control group (with no history, or family history, of depression). Poorer sleepers, as determined by the sleep diary, were significantly more likely to report poorer life‐quality and mood perceptions on the subsequent questionnaire. Furthermore, the depressed group reported significantly poorer perceptions of sleep quality and poorer perceptions of life‐quality and mood than the control group, even though estimates of sleep disturbance were similar. This may indicate that depressed individuals experience more ‘sleep distress’ than healthy individuals. These results confirm the extent of subjectively reported sleep disruption in depression and demonstrate the merit of combining the amended PghSD and QOLI to quantify sleep perceptions. Copyright © 2002 John Wiley & Sons, Ltd. Copyright © 2002 John Wiley & Sons, Ltd.

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