Differences between objective and subjective sleep quality in depressed patients and the correlative factors

Objective To investigate the differences between objective and subjective sleep quality in depressed patients and the correlative factors.Methods 30 depressed patients complained of insomnia have been diagnosed and assessed by DSM-IV diagnostic criteria for depression.The cases' HAMD-17 scores were equal to or more than 17.There were 14 normal controls without serious physical diseases,mental diseases and family history of mental diseases.Both cases and controls were estimated with Pittsburgh sleep quality index(PSQ1) for subjective sleep quality and monitored by the whole-night polysomnography(PSG) records for objective sleep quality.Results Compared with the differences in the controls,there were significant differences between the subjective and objective sleep quality in the depressed patients(P 0.001).The differences between the subjective and objective sleep quality were also related to the scores of PSQI and HAMD-17 in the depressed patients(P 0.05).Conclusions The depressed patients lacked satisfaction with the subjective sleep quality and they might overstate the severity of insomnia.The differences between the subjective and objective sleep quality in the depressed patients were related to the severity of depression.However,the severity of depression might also influence the differences between the subjective and objective sleep quality in the depressed patients.