[Relationship between nurses' sleep quality and quality of life in class Ⅲ grade a hospitals in Lanzhou in 2023: the chain mediating role of social support and psychological resilience].

Objective: To explore the relationship between sleep quality and quality of life of nurses in tertiary hospitals, and to verify the chain-mediated role of social support and psychological resilience.

Methods: A questionnaire survey was conducted from November to December 2023 on 732 nurses from three tertiary hospitals in Lanzhou City, China, using cross-sectional whole cluster sampling. The Quality of Life Scale(SF-36), the Psychological Resilience Scale(CD-RISC), the Pittsburgh Sleep Quality Index(PSQI), and the Social Support Rating Scale(SSRS) were applied to measure their quality of life, psychological resilience, quality of sleep, and social support levels. A partial correlation was used to determine the relationship between the factors.

Results: (1) The demographic characteristics were dominated by females(95.5%), Han Chinese(98.2%), and bachelor's degree(83.6%); the occupation-related characteristics were dominated by the length of service of 6-10 years(39.9%) and 11-19 years(38.5%), and the job title was dominated by nurse practitioner(52.9%). (2) Nurses' sleep quality was negatively correlated with the level of social support(r=-0.226, P<0.01), negatively correlated with the level of psychological resilience(r=-0.118, P<0.01), and negatively correlated with the level of quality of life(r=-0.502, P<0.01). The level of social support and the level of psychological resilience were positively correlated(r=-0.311, P<0.01). and positively correlated with the level of quality of life(r=0.347, P<0.01). The level of psychological resilience was positively correlated with the level of quality of life(r=0.382, P<0.01). (3) The sleep status of nurses had a direct impact on the quality of life, that is, the direct effect was significant(Direct effect accounted for 84.3%, 95%CI-18.951-13.099). The degree of social support has a significant partial mediating effect between sleep quality and quality of life, that is, indirect effect 1(Indirect effect 1 accounted for 9.84%, 95%CI-4.261--1.179). The degree of social support and the level of mental resilience have significant chain mediating effect between sleep quality and quality of life, that is, indirect effect 2 is significant(Indirect effect 2 accounted for 5.33%, 95%CI-1.710--0.682).

Conclusion: Level of social support and level of psychological resilience chain-mediated the relationship between sleep status and quality of life among nurses.