Firefighters demonstrate high rates of posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD). Research has yet to compare how these diagnoses and their co-occurrence relate to firefighter mental health. This study evaluated trauma load, PTSD, alcohol use, depression, sleep, suicide risk, anger, and occupational stress across four discrete groups of firefighters (N = 660): (1) trauma-exposed only (n = 471), (2) probable PTSD-only (n = 36), (3) probable AUD-only (n = 125), and (4) probable PTSD-AUD (n = 28). Firefighters completed an online survey. Firefighters with probable PTSD-AUD demonstrated higher scores on all criterion variables, except trauma load, compared to firefighters with probable AUD-only or trauma-only. Firefighters with probable PTSD-AUD and probable PTSD-only reported similar levels of all indices, except alcohol use severity and suicide risk, which were higher among the probable PTSD-AUD group. Results provide preliminary empirical evidence of the deleterious impact of PTSD-AUD comorbidity among firefighters.

消防员表现出创伤后应激障碍 (PTSD) 和酒精使用障碍 (AUD) 的高发病率。研究尚未比较这些诊断及其同时发生与消防员心理健康的关系。本研究评估了四组消防员（N  = 660）的创伤负荷、PTSD、酒精使用、抑郁、睡眠、自杀风险、愤怒和职业压力：（1）仅受创伤（n  = 471），（2 ) 可能仅 PTSD ( n  = 36), (3) 可能仅 AUD ( n  = 125), 和 (4) 可能 PTSD-AUD ( n = 28)。消防员完成了一项在线调查。与可能仅具有 AUD 或仅具有创伤的消防员相比，具有可能 PTSD-AUD 的消防员在所有标准变量（创伤负荷除外）上表现出更高的分数。可能患有 PTSD-AUD 和可能仅 PTSD 的消防员报告的所有指标水平相似，但酒精使用严重程度和自杀风险在可能 PTSD-AUD 组中较高。结果为消防员中 PTSD-AUD 合并症的有害影响提供了初步经验证据。