Nurses' Mental Health and Workplace Violence

This study was conducted from September 2020 to March 2021, relying on a cross-sectional design with a multistage random sampling method, in which one tertiary hospital was randomly selected from each of the five regions (east, west, south, north, and central) in Liaoning Province. As male nurses account for less than 1% of Chinese nurses, our study focused solely on female nurses (Yu et al., 2019 (link)). 240 nurses were randomly selected from each hospital to conduct the self-administered questionnaire survey, for a total of 1,200 nurses. All respondents signed an informed consent form prior to filling out the questionnaire. With the help of hospital staff, 1,200 questionnaires were distributed, and the study population included all nurses working full time in these hospitals with at least 1 year of experience. Interns were excluded from the study. 183 study participants were excluded because they did not complete the questionnaire due to time constraints or had data missing from the questionnaire. Thus, a total of 1,017 nurses were included in this study, with a participation rate of 85%. The study contained seven independent variables: age, household registration, monthly expenditure, sector of work, years of experience, WPV, and self-efficacy, totaling 20 entries. According to the requirements of multiple linear regression, the sample size should generally be 5–10 times the number of independent variable entries, and considering an 80% effective response rate, the minimum sample size required for this study was about 250 cases. In this study, as part of a large study, to explore the relationship between WPV and nurses’ mental health and reduce sampling error, we expanded the sample size as much as possible. Finally, 1,017 valid questionnaires were collected, which satisfied the minimum sample size required for the study.