Posttraumatic stress disorder and depression prevalence among enterprise employees after an accident disaster

  Objective  To explore the prevalence and influencing factors of posttraumatic stress disorder (PTSD) and depression among enterprise employees after an accident disaster.

  Methods  We conducted a self-administered questionnaire survey among 2 456 employees selected using cluster sampling from 21 enterprises in Tianjin city from October (about two months after an accident disaster) to December 2015. Post-Traumatic Stress Disorder Checklist-Civilian Version (PCL-C), Center Epidemiological Studies of Depression Short Form (CES-D-10), and Connor-Davidson Resilience Scale Short Form (CD-RISC-10) were adopted in the study.

  Results  Among the employees, the overall prevalence rate of PTSD, depression, and PTSD-depression co-morbidity was 20.09%, 28.29%, and 14.36% respectively. Compared to the female employees, the male employees reported significantly higher prevalence rate of PTSD (22.37% vs. 17.27%, χ² = 9.37, P < 0.01) and PTSD-depression co-morbidity (15.87% vs. 12.50%, χ² = 5.33, P < 0.05); but no gender difference was observed in depression prevalence rate (χ² = 1.12, P > 0.05). Logistic regression analysis revealed that impact factors for PTSD, depression and PTSD-depression co-morbidity were physically injured (for PTSD: odds ratio OR=2.430, P < 0.01; for depression: OR = 1.863, P < 0.05; for the co-morbidity: OR = 1.903, P < 0.05), heavy losses caused by the accident (OR = 1.343, P < 0.01; OR = 1.464, P < 0.001; OR = 1.513, P < 0.001), and mental resilience (OR = 0.335; OR = 0.274; OR = 0.275; all P < 0.001).

  Conclusion  For the prevalence of PTSD and depression, physically injured and heavy losses caused by the accident are risk factors and the mental resilience is a protective factor among enterprise employees after the accident disaster.