(Fire)fighting the pandemic: PTSD and depression symptom profiles and longitudinal correlates

Background: Firefighters face regular exposure to potentially traumatic events, which is associated with the development of post-traumatic stress disorder (PTSD) and depression. Despite the high comorbidity, there remains limited understanding of the co-occurrence of PTSD and depression in terms of symptom patterns. Due to the unique stressors added by the COVID-19 pandemic, it is relevant to also understand this comorbidity in light of the impact of the COVID-19 pandemic.Objective: This study aimed to identify PTSD and depression symptom profiles in firefighters, and correlates thereof, using latent profile analysis (LPA).Method: 139 Dutch Firefighters (93% male) completed self-report surveys prior to the COVID-19 pandemic (T1) and after the outbreak COVID-19 pandemic (T2) on PTSD, depression, COVID-19 related stressors and other relevant correlates.Results: LPA demonstrated the best fit for a three-profile solution for PTSD and depression at T2 encompassing a low symptom profile (35%), a moderate symptom profile (46%), and an elevated symptom profile (19%). Profiles displayed mostly below clinical range scores for both PTSD and depression at T2. PTSD severity at T1, depression severity at T1, loneliness at T2, COVID-19-related stressors at T2 were significantly and positively related to PTSD and depression symptom profiles at T2.Conclusion: Our results shed light on the resilience of firefighters. Even in light of COVID-19 pandemic, firefighters seemed to maintain generally low levels of psychopathology. Despite firefighters' overall resilience, our findings highlight loneliness and the negative impact of the COVID-19 pandemic as potential risk factors for increased severity of PTSD and depression symptoms.