Purpose
This study aimed to examine the moderating effect of calling on the relationship between post-traumatic stress and turnover intention among nurses caring for COVID-19 patients.
Methods
Data were collected from 151 nurses caring for COVID-19 patients at three university hospitals located in D City. Participants completed selfreported online surveys on post-traumatic stress (IES-R-K), calling (CVQ-R), and turnover intention. Descriptive statistics, t-tests, one-way ANOVA, Scheffé test, Pearson's correlation coefficients, and hierarchical multiple regression were performed using SPSS 25.0.
Results
The mean scores of post-traumatic stress, calling, and turnover intention were 0.83±0.70, 1.51±0.71, and 2.89±1.10, respectively. Post-traumatic stress had positive correlations with calling (r=.20, p=.011) and turnover intention (r=.29, p=.001), whereas calling had a negative correlation with calling and turnover intention (r=-.17, p=.029). Calling had a moderating effect in the relationship between post-traumatic stress and turnover intention (β=-.16, p=.032).
Conclusion
Calling has a moderating effect on the relationship between post-traumatic stress and turnover intention. Therefore, developing and implementing a program is necessary to strengthen nurses' perceptions of calling to prevent nurses with post-traumatic stress from leaving their jobs.

Purpose
This study aimed to investigate the effects of job characteristics and professional self-concept on competency in forensic nursing among operating room nurses at university hospitals. Methods: Data were collected from 164 operating room nurses employed at university hospitals. The collected data were analyzed in SPSS 23.0, using the mean, standard deviation, independent t-test, one-way analysis of variance, Scheffé post-hoc test, Pearson correlation coefficients, and multiple regression analysis. Results: Professional self-concept showed a statistically significant positive correlation with forensic nursing competency (r=.60, p<.001). The following factors significantly influenced forensic nursing competency among operating room nurses: professional self-concept (β=.69, p<.001), total career lengths of <5 years (β=.21, p=.006) and 5-9 years (β=.20, p=.011), and job characteristics (β=.19, p=.007). A three-step regression model was statistically significant (F=29.74, p<.001) and the total explanatory power of the regression model was 41.4%. Conclusion: This study identified that professional self-concept, total career years, and job characteristics as the most significant factors influencing operating room nurses' forensic nursing competency. Therefore, it will be necessary to develop educational programs to improve professional self-concept and job characteristics.