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This study examined pathways of influence between work stress, depressive symptoms, nicotine dependence, expressive suppression, and cognitive reappraisal in fishermen with smoking habits in Qionghai, Hainan province, China (N = 1068). These fishermen responded to multiple assessments a week before leaving on a deep-sea fishing trip, including a Mental Stressor Investigation Questionnaire (MSIQ), the Center for Epidemiological Studies Depression Scale (CES-D), the Russell Reason for Smoking Questionnaire (RRSQ), and an Emotion Regulation Questionnaire (ERQ). Structural equation modeling (SEM) analyses of the collected data in Mplus 7 showed that work stress and nicotine dependence were independent predictors of depressive symptoms. The relationship between work stress and depressive symptoms was found to be partially mediated by nicotine dependence and be moderated by cognitive reappraisal. The evidence suggests it advantageous to examine the need of work stress, nicotine dependence, and cognitive reappraisal when attempting to understand depressive symptoms in fishermen with a smoking habit. These findings suggest that improving nicotine dependence through work stress management and training in cognitive reappraisal could be utilized as effective modalities for improving depressive symptoms.

Background: Marine fishermen experience high levels of environmental and relationship stress and anxiety. The current study explored the role of stress in the relationship between neuroticism and anxiety symptoms among marine fishermen. Materials and methods: Participants (fishermen from Tanmen in Qionghai city, Hainan Province) completed three questionnaires: the NEO-Five-Factor Inventory-Neuroticism Subscale (NEO-FFI-N); the Mental Stressor Investigation Questionnaire (MSIQ); and the Mood and Anxiety Symptoms Questionnaire-30-item-Anxious Arousal Subscale (MASQ-D30-AA) within 1 week before embarking on a fishing trip and then again within 1 week after their return to port. The data were subjected to correlational analyses and structural equation modelling.Results: Positive correlations were found between NEO-FF-N (neuroticism) score, MSIQ score (total stress), MSIQ work-relationship score, ship environmental stress score, and MASQ score (anxiety symptoms). Regression analyses showed environmental stress had a significant moderating effect on the relationship between neuroticism and anxiety symptoms, and further analysis showed a mediating effect of work-relationship stress on the relationship between neuroticism and anxiety symptoms. Conclusions: Marine fishermen with high environmental stress had greater anxiety symptoms than those with low environmental stress. Neuroticism in marine fishermen further affects anxiety symptoms by affecting the level of work-relationship stress.