Objective To explore the relationship between depression and quality of life in schizophrenic patients, and the mediating role of sleep quality and weakness. Methods We selected inpatients with schizophrenia from 4 secondary and above psychiatric hospitals in Chengdu for questionnaire survey by convenient sampling method between March and July 2022. The questionnaires included general demographic data, disease-related questionnaire, Self-rating Depression Scale (SDS), Pittsburgh Sleep Quality Index (PSQI), Fried Frailty Phenotype (FFP) and Schizophrenia Quality of Life Scale (SQLS). Results A total of 594 patients were included, including 373 males (62.8%) and 221 females (37.2%). The univariate analysis of the factors affecting the quality of life of the patients showed that there was no significant difference in the age, sex, only child or not, education level, course of schizophrenia, and combined medication (P>0.05), except for the family history of mental disorders (P<0.05). SQLS score was positively correlated with SDS score (r=0.635, P<0.001), PSQI score (r=0.402, P<0.001) and FFP score (r=0.327, P<0.001). The mediation of sleep quality and weakness on depression and quality of life are significant, and chain-mediated effect of depression and quality of life was significant. Conclusion The depression level of schizophrenia patients can not only directly affect their quality of life, but also indirectly affect their quality of life through the mediation of sleep quality, weakness and chain mediation of sleep quality and weakness.
Objective To investigate the status and influencing factors of psychosis-related post-traumatic stress disorder (PR-PTSD) in hospitalized patients with schizophrenia. Methods A questionnaire survey was conducted among the hospitalized patients with schizophrenia in three grade Ⅱ or above psychiatric hospitals in Chengdu between March and July, 2022, using the convenient sampling method. Questionnaires included the General Information Questionnaire, Impact of Event Scale-revised (IES-R), Self-rating Depression Scales, Simplified Coping Style Questionnaire, and Intolerance of Uncertainty Scale. If the score showed skewed distribution, it was expressed by the median (lower quartile, upper quartile). According to IES-R score, the patients included were divided into 2 groups. The patients whose score ≥33 were divided into PR-PTSD group, and <33 were divided into non-PR-PTSD group. The general information of the two groups of patients were compared. The correlation between PR-PTSD and depression, coping style and intolerance of uncertainty of the included patients were analyzed. The factors affecting the PR-PTSD of hospitalized patients with schizophrenia were analyzed by multivariate binary logistic regression analysis. Results A total of 388 patients were included. Among them, there were 282 cases in the non-PR-PTSD group and 106 cases in the PR-PTSD group. The IES-R score was 23.00 (15.00, 33.00), the depression score was 45.00 (38.00, 53.00), the negative coping style score was 11.00 (8.00, 14.75), the positive coping style score was 20.00 (16.00, 25.00), and the intolerance of uncertainty score was 28.00 (22.25, 33.00). IES-R was positively correlated with depression (r=0.370, P<0.001), negative coping style (r=0.396, P<0.001), positive coping style (r=0.111, P=0.029) and intolerance of uncertainty (r=0.467, P<0.001). Regression analysis showed that depression [(odds ratio, OR)=1.073, 95% confidence interval (CI) (1.043, 1.105), P<0.001)], negative coping style [OR=1.121, 95%CI (1.040, 1.208), P=0.003], intolerance of uncertainty [OR=1.081, 95%CI (1.045, 1.118), P<0.001] were the influencing factors of PR-PTSD in hospitalized patients with schizophrenia. Conclusions The prevalence of PR-PTSD in hospitalized patients with schizophrenia is high. Depression, negative coping style and intolerance of uncertainty are the risk factors for PR-PTSD in hospitalized schizophrenia patients.