The Depression Anxiety Stress Scale-21 (DASS-21) is an instrument in the assessment of mental health status. The current study recruited 1,532 Chinese hospital workers [74.4% female; mean age = 31.97 (SD = 9.70) years] to examine the reliability, latent structure, and measurement invariance of the DASS-21 between genders. The Cronbach's α values were greater than 0.90 for total score. This study examined four possible models of the DASS-21 using the confirmatory factor analysis (CFA) in Chinese hospital workers. The results from CFA revealed that the latent structure of the DASS-21 in medical staffs is best represented by a one-factor model. Then we used the one-factor model to examine measurement invariance across genders by using a multiple-group categorical CFA. All values of root mean square error approximation (RMSEA) were less than 0.08, all Comparative Fix Index (CFI) and Tucker-Lewis Index values were greater than 0.90, all CFI (changes in CFI) values were less than 0.010, and RMSEA (the changes in RMSEA) were less than 0.015. These findings supported the gender invariance of the DASS-21 among Chinese hospital workers.
Posttraumatic growth (PTG) is defined as positive psychological change in the wake of highly challenging circumstances. Healthcare workers in particular are more vulnerable to stressors and trauma than the general population. The current study examined the use and effectiveness of a novel positive psychological intervention based on Chinese traditional culture to improve PTG in hospital healthcare workers. The intervention was provided to 579 healthcare workers at hospitals in Guilin, Shenzhen and Xiangtan. Scores on the Posttraumatic Growth Inventory (PTGI) and its subscales were significantly higher after intervention than before (p < 0.001). Of the five aspects of PTG, the aspect of “new possibilities” benefited the most from intervention (Cohen’s d = 0.45). PTG in women, nurses and college graduates increased to a greater extent than other participants after intervention. It was concluded that our novel intervention is effective at improving PTG in medical staff.
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