Utilize the prevalence, associated factors and population distribution of AD and MCI among residents of the Hubei province aged 60 years or over to prove that elderly people who study and communicate with others, take part in regular physical exercise and choose a healthy lifestyle, will prevent or slow the decline in cognitive ability. If elderly people study and communicate with others, take part in regular physical exercise and choose a healthy lifestyle, can prevent or slow the decline in cognitive ability. A cross-sectional study was used for the recruitment of subjects. The screened patients with AD and MCI were then selected as patients in a case–control study. A total of 4314 subjects were recruited into the study. The prevalence of AD and MCI was 1.44% and 10.04%, respectively. The prevalence of AD and MCI differed significantly as a function of age and gender (p < 0.05). The preventative factors for AD and MCI, separately, included a happy marriage (OR = 0.69, 95%CI: 0.36–1.35) and higher education (OR = 0.65, 95%CI: 0.55–0.78). The risk factors for AD and MCI, separately, included infrequent participation in social activities (OR = 1.00, 95%CI: 0.60–1.66) and infrequent communication with children (OR = 1.35, 95%CI: 1.09–1.69). The prevalence of AD for people aged 60 or over in the Hubei province was lower than the national average of 3.06%. The prevalence of MCI was within the national range (5.2–23.4%). The influencing factors of AD and MCI were associated with the participants’ social connections, lifestyle behaviors, somatic diseases and so on. The elderly people who study and communicate with others, take part in regular physical exercise and choose a healthy lifestyle will prevent or slow the decline in cognitive ability. The conclusion section has been replaced.

Abstract Objective The aim of this study was to investigate the mental health status and sleep quality of university students after local outbreak of COVID-19, and to help them understand the psychological stress reaction and provide base for their mental health education. Methods A cross-sectional survey was conducted on the mental health status of university students in a Wuhan-based university. Results A total of 897 university students were enrolled in the study. Compared with the epidemic period, university students' mental health status and sleep quality has a great deal of difference in the aspects of gender, grade, discipline and specialty, physical exercise, as well as with their family relationships and so on. 64.26% students would like to talk to their peers or close friends, while only 2.71% would like to call a caring hotline or seek help from a psychologist. Conclusion After the local outbreak of COVID-19 in Wuhan was contained, the mental health status and sleep quality of more than half of the students improved. However, priority attention and care should be given to female students, senior students, those undertaking literature and history majors and those dissatisfied with family relationships.

Sleep disorders will lead to difficulties in entering or maintaining sleep. Short-term sleep disorders will affect people’s attention and memory, and longterm sleep disorders will lead to a decline in human immunity and induce some potential physical diseases and psychological diseases such as anxiety symptoms and depressive symptoms [1] . Facing pressure from study, life, employment, and other aspects, college students are prone to depressive symptoms, anxiety symptoms, sleep disorders, and other problems.