ABSTRACT
Objective To investigate the differences between subjective and objective sleep quality in recurrent depressive patients and the correlative factors. Methods Thirty-two cases of recurrent depressive patients(the recurrent group) and 32 cases of first episode depressive patients(the control group)who met the inclusion were recruited in this study. The subjectivesleep quality ,mood and objective sleep quality of patients were estimated by Pittsburgh sleep quality index(PSQI),Hamilton anxiety Scale(HAMA),Hamilton depression Scale(HAMD),respectively. O ne whole-night polysomnography (PSG) was recorded. Results On subjec-tivesleep quality,the total sleep time was shorter,the sleep latency was longer,and the sleep efficiency was lower in the recurrent group compared with the control group. On objectivesleep quality ,the wake times were increased , the NREM1 phase was longer,the NREM2 phase was shorter,the RME phase was longer,the proportion of REM phase was increased,and the latency of REM phase was shorter in the recurrent group compared with the control group(P<0.05,respectively). There were significant differences between the subjective and objective sleep quali-ty in both groups,while the differences in the recurrent group were more significant(P < 0.01). In the recurrent group,thedifference of the total time between the subjective and objective sleep was positively correlated with PSQI score,the duration of disease and the number of attacks(P < 0.05),while,the differences of the sleep latency and sleep efficiency between the subjective and objective sleep were both positively correlated withPSQI score and the HAMA-14 score,respectively(P<0.05). Conclusion There was a significant difference between the subjec-tive and objective sleep quality of patients with recurrent depression ,and the differences were related to the course of disease,the number of attack,PSQI score and HAMA-14 score.