Abstract
Nursing is a high-risk occupation with high exposure to stress. The physical and mental health of nurses is directly related to the quality of medical services. Therefore, the sleep quality of nurses should not be ignored. In this study, the method of cluster random sampling was adopted from May to September 2019, and a questionnaire survey was conducted among 521 surgical nurses from five affiliated hospitals of Xinjiang Medical University. The relationship between mental health and sleep quality was analyzed, and 20% of the participants with sleep disorders were randomly selected. The sleep disorders used 1 : 1 matching, finally providing a sample with 60 cases and 60 controls for measurement of the CLOCK gene (rs1801260, rs6850524), to analyze the effect of the interaction between mental health and the CLOCK gene on sleep. The mental health and sleep quality of the surgical nurses were evaluated using the Symptom Checklist 90 (SCL-90) and Pittsburgh Sleep Quality Index (PSQI). The study found that surgical nurses had poor sleep, and there were differences associated with age, years working, frequency of night shifts, and incidence of sleep disorders under marital status (p < 0.05). The PSQI scores of the positive psychological symptoms were higher than those of the negative psychological symptoms. The rank sum test was used to compare the sleep quality scores of different genotypes in CLOCK rs1801260 and rs6850524; the results indicated that the PSQI scores were different among different genotypes at the rs1801260 and rs6850524 loci. The logistic regression results suggested that CLOCK gene rs1801260 (TC) and positive psychological symptoms were influential factors for sleep disorders, and the interaction of positive psychological symptoms∗rs1801260 (TT) was a risk factor for sleep disorders (OR = 10.833, 95% CI: 2.987–39.288). The sleep quality of nurses is not only affected by demographic characteristics but also affected by mental health status and the CLOCK gene.
Highlights
The incidence of sleep problems is increasing year by year, and sleep disorders have become a common clinical disease [1]
The results indicated that the incidence of sleep disorders under different demographic characteristics could be considered as different with age (p = 0:031), working age (p = 0:038), night shift frequency (p < 0:001), and marital status (p = 0:027)
Using the CC genotype as a reference, post hoc tests were conducted on the scores of the above genotypes showing differences, and the results showed that for the Pittsburgh Sleep Quality Index (PSQI) score, GG was higher than CC; for subjective sleep quality, GG was higher than CC; for time of falling asleep, GG was higher than CC; for sleeping time, GG was higher than CC; for sleep efficiency, GG was higher than CC; for sleep disorders, GG was higher than CC; and for daytime dysfunction, GG was higher than CC (Table 5)
Summary
The incidence of sleep problems is increasing year by year, and sleep disorders have become a common clinical disease [1]. Sleep problems are a risk factor for a variety of mental health and chronic diseases [2]. The occurrence of sleep problems reduces the quality of life and working ability of professional people and greatly increases the risk of accidents at work. Lack of sleep or poor quality sleep can lead to abnormal selfregulatory functions of the body and disorder of the circadian rhythm of the biological clock. Negative emotions such as anxiety and depression can be generated during normal life, and fatigue, burnout, and slowdown can occur in the working life [4,5,6]
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