Objective To understand the distribution of severe mental disorders in Cangzhou City to provide basic foundation for making mental hygiene working planning.Methods From June 2011 to June 2015,five counties (cities and districts) were selected for data collation and analysis according to the east,south,west,north and the geographic location in all jurisdictions of Cangzhou.The data of patients with severe mental disorders were based on the village or community doctor report.Results The total resident population of five counties (cities and districts) was 1,695,752.The serious mental disorders detection rate was 3.06‰ in the district (2.65‰ in male and 3.50‰ in female);and it increased with age,and 70-year-old age group had the highest rate.In six categories of serious mental disorders,schizophrenia had the highest proportion (72.9％),followed by mental retardation (9.64％),mental disorders due to epilepsy (8.60％),bipolar (affective) disorder (4.34％),schizoaffective psychosis (3.02％),and paranoid psychosis (1.50％).It was found that 98.28％ patients were Han nationality;56.72％ patients lived in impoverished condition;88.66％ patients were famers.Conclusion Schizophrenia is the most common serious mental disorders in Cangzhou city,and the majority of patients were female with poorer families.

Objective:To explore the relationship between sleep duration and depressive symptoms in middle-aged and elderly people.Methods:A total of 11 931 middle-aged and elderly people aged ≥55 years who participated in the baseline survey of the "Community Cohort Study of Specialized Nervous System Diseases" in China from 2018 to 2019 were selected to obtain basic information about their lifestyle, food intake frequency, disease history, sleep duration. The body height and weight were measured, and body mass index (BMI) were calculated. The subjects with depressive symptoms were screened with the Geriatric Depression Scale (GDS-30). Restricted cubic spline model and multivariate logistic regression model were used to analyze the relationship between sleep duration and depressive symptoms.Results:Among the middle-aged and elderly people aged ≥55 years, 17.79% reported sleep duration less than 7 hours, 16.84% reported that their sleep duration ≥9 hours, and the detection rate of depression symptoms was 7.95%. After adjusting for factors such as region, age, gender, the restricted cubic spline results showed the U-shaped relationship between sleep duration and the risk for depressive symptoms, the results of multivariate logistic regression analysis showed that the risk for depressive symptom in middle-aged and elderly people aged ≥55 years with sleep duration ≤5 hours, 6 hours, and ≥9 hours were 1.749(95% CI:1.279-2.392), 1.284(95% CI:1.021-1.615) and 1.260(95% CI:1.033-1.538) times higher compared with the counterparts with sleep duration 7-8 hours, the risk for depressive symptom in women with sleep duration ≤5 hours, 6 hours and ≥9 hours were 2.115 (95% CI:1.473-3.038), 1.605(95% CI:1.213-2.123) and 1.313(95% CI:1.011-1.705) times higher, respectively, compared with counterparts with sleep duration 7-8 hours, the risk for depressive symptoms in 55-64-year-old middle-aged and elderly people with sleep duration ≤5 hours and ≥9 hours were 1.806 (95% CI:1.014-3.217) and 1.478 (95% CI:1.060-2.061) times higher compared with counterparts with sleep duration 7-8 hours, and the risk for depressive symptoms in elderly people aged 65-74 years with sleep duration ≤5 hours was 2.112 (95% CI:1.327-3.361)times higher compared with counterparts with sleep duration 7-8 hours, the differences were all significant ( P<0.05). There was no statistically significant association between sleep duration and depressive symptoms in men and in elderly people aged ≥75 years ( P>0.05). Conclusion:Insufficient or prolonged sleep was independently associated with depressive symptoms in middle-aged and elderly people, showing a U-shaped relationship, especially in women and in middle-aged and elderly people aged 55-64 years.