Identifying patterns of occupational stress trajectories among newly graduated nurses: A longitudinal study

Background: Newly graduated nurses have comparatively high levels of occupational stress. Previous studies have evaluated stress across this population as a whole; however, little is known about potentially different occupational stress responses among new nurses and the impact of demographic and work-related characteristics on occupational stress responses.

Objectives: To determine differences in occupational stress levels of newly graduated nurses at different time points during the first 3 years of practice; to identify potential subgroups of nurses who perceive different occupational stress levels over time; and to evaluate differences in identified subgroups based on demographic and work-related characteristics.

Design: An observational longitudinal study.

Settings: Four tertiary hospitals in Shanghai were selected randomly using a computer-generated random number table.

Participants: All 343 newly graduated nurses employed in the selected hospitals were invited to participate. The inclusion criteria were (1) newly graduated without nursing experience, excluding nursing internship; (2) current employment in in-patient departments/ICU/operation room; and (3) consented to participate. A total of 152 participants met criteria and completed all four points of data collection.

Methods: Participants completed an annual paper survey. Occupational stress levels were measured using the Job Stress Scale for Newly Graduated Nurses. Occupational stress scores at different time points were compared using latent growth modeling. Group-based trajectory modeling was performed to identify subgroups of occupational stress trajectory. ANOVA and Fisher's exact test were conducted to examine the differences of demographic characteristics between classes.

Results: The entire sample of newly graduated nurses experienced a significant decrease in occupational stress during the first three years. The best-fitting group-based trajectory model described three distinctive trajectories: low occupational stress (19.1% of sample); medium occupational stress (67.1%) and high occupational stress (13.8%). The low occupational stress subgroup had a higher proportion of nurses from Shanghai, and the majority were employed as contact- based nurses. In comparison, the high occupational stress subgroup had the largest proportion of nurses from other provinces (outside of Shanghai), almost half of participants were employed as "bianzhi" nurses, and the majority reported to be assigned preceptor by shift.

Conclusions: Newly graduated nurses perceived occupational stress differently over time. Identified subgroups with different demographic characteristics have significantly different perceptions of occupational stress over the first three years of practice and future intervention programs such as peer-support programs or a standardized preceptorship should be tailored to meet the unique needs of these different subgroups.