Public Health Emergency (PHE) is a formal proclamation made by the World Health Organization (WHO) in response to an exceptional event. It refers to an exceptional incident recognized as posing a public health threat to other nations due to the global transmission of disease and possibly necessitating a coordinated international reaction [1]. Despite WHO has declared end to COVID-19’s emergency phase [2], The psychological problems of medical staff who treated patients during the pandemic persist and are still overlooked [3].
PHE has presented unparalleled challenges and risks to the physical and mental well-being of medical staff [4], who combated the virus and cared for the infected patients during PHE. Medical staff are exposed to high levels of stress, fear, anxiety, depression, and trauma [5], which may have negative consequences for their well-being and functioning [6]. Nevertheless, certain medical staff might encounter favorable psychological transformations while navigating the pandemic, exemplified by Post-Traumatic Growth(PTG) [7]. PTG embodies the psychological advantage stemming from an adjusted response to trauma [8], encompassing improved interpersonal bonds, emerging prospects, heightened inner fortitude, spiritual advancement, and an amplified zest for life [9]. This growth can enhance their professional identity [10] and mental health. Exploring these positive changes in PTG could encourage reflection on and making sense of their experiences, which can reduce the detrimental effects of trauma and increase their levels of life satisfaction [11].
The factors that influence the development of PTG are complex and multifaceted, one of the most studied factors is perceived social support. People have been discovered to benefit from perceived social support, which helps them manage, feel secure, and derive meaning from their experiences [12, 13]. Perceived social support can provide substantial social interactions that could directly lead to positive changes, such as expressing emotions and giving feedback. Previous research had found significant positive correlation between perceived social support and PTG [14–17], and a favorable indirect influence on PTG was found in one study [18], however the type of trauma, culture, age, and sample size may affect this association [19]. Perceived social support not only directly promotes post-traumatic growth [20], but also exerts an indirect effect [21] through other factors. Therefore, it is of great significance to analyze the relationship between perceived social support and post-traumatic growth in depth.
Another factor that may play a role in PTG is resilience, it is an adaptation in the face of adversity [22], it can be defined as the preservation of mental health or rapid recovery following periods of exposure to stressors [23], which may be brought on by potentially traumatic events, difficult circumstances, a crucial life stage, or physical disease [24]. Resilience was found to be a protective factor that engaged in the PTG of severe illness [25], and have closely related to PTG [26]. Resilience can enable healthcare workers to cope effectively with trauma-related stressors, which enables people to thrive and gain experience in the face of hardship [27].
Certain investigations have revealed that perceived social support could intertwine with additional elements, like resilience, to impact PTG. Resilience could potentially function as a mediating element in the interplay between perceived social support and PTG. Wu's research [28] highlighted that resilience acted as a mediator in the connection between perceived social support and PTG among primary caregivers of individuals with schizophrenia. This implies that the constructive impact of perceived social support on PTG was more pronounced for individuals with lower resilience levels compared to those with higher resilience levels. Hou's study [29] found that resilience mediates the impact of perceived social support on healthcare workers' mental health to some extent, and is moderated by age. Given that PTG is one of the positive changes in mental health [30], we wanted to verify whether psychological resilience also mediates the effect of perceived social support on PTG.
Previous studies have mainly focused on the impact and factors of the pandemic's enduring effects, such as PTG [31]. However, little is known about the PTG of medical staff facing PHE, and its determinants and mechanisms. This paper examines the relationship between perceived social support and PTG in healthcare workers, and the mediating role of resilience. Our hypotheses are: H1: Perceived social support has a positive direct effect on PTG among medical staff. H2: Perceived social support has a positive indirect effect on PTG through resilience among medical staff. We used regression models and bootstrapping techniques to measure the direct and indirect effects of perceived social support on PTG via resilience.