Objective and subjective sleep quality and quality of life in patients with chief complaint of insomnia

Objective: There are differences between subjective and objective assessment of sleep in the insomniacs.In this study,we compared the correlation between the subjective and objective assessment of sleep and quality of life in patients with the chief complaint of insomnia,in order to provide clinical evidence for the treatment of insomnia.Methods: A total of 64 patients with the chief complaint of insomnia were examined successively with polysomnography(PSG),and the PSG paramenters were used to assess objective sleep.The PSG data of 17 heathy people were used as control.The Pittsburgh Sleep Quality Index(PSQI) was used to evaluate the subjective sleep quality,the Short Form 36 Health survery Questionnaire(SF-36) were used to evaluate quality of life,and the Beck Depression Inventory(BDI) and Beck Anxiety Inventory(BAI) were used to evaluate emotional status.Results: Ninety percent of patients had poor subjective sleep quality.Compared with healthy controls,patients demonstrated prolonged sleep latency,increased wakefulness time after sleep onset,lower sleep efficiency and prolonged rapid eye movement sleep latency(Ps0.05).The PSQI scores had negative correlation with SF-36 physical health scores(r=-0.25,P0.05),but the significance was reduced when controlled for scores of BDI and BAI.There was no significant correlation between PSG parameters and SF-36 physical health scores.Conclusion: In patients with insomnia,subjective assessment of sleep quality might have stronger correlation with quality of life,in which the insomnia related depressive and anxious symptoms may play a major role.It indicates that we should pay attention to the improvement of subjective sleep quality,also identify and manage the emotional problems promptly in the treatment of insomnia.