Investigation Of Relation Between Occupational Stress And Depression Of Power Worker In Hainan Province

Background and ObjectiveWith the development of society and economics,the current studies showed that the detection rate of high occupational stress was gradually increasing in certain professional population,and the harm of occupational stress to the physical and mental health was also gradually manifested.However,little attention had been paid to power workers,most research focused on medical staff,oil and coal workers,police,teachers,etc.In recent years,with the rapid development of economy and the electric load continued to rise,that lead to power workers not only completed heavy tasks,but also bore great work pressure,it may had adverse impacts on the physical and mental health.Depression was one of the bad emotions caused by occupational stress.It was difficult to prevent and treat this disease because the unclear pathogenesis,and the doubtful prognosis make its intervention and control imminent.The limited evidence suggested that the effect of occupational stress on depression could be considered to be mediated by inflammatory factors,but the correlation was not clear.Therefore,this study combined on-site investigations and laboratory tests to understand the current situation of occupational stress and depression among power workers,explore the influencing factors and analyze the relationship between occupational stress,depression and inflammatory factors,which could provide basic data for the prevention and intervention of occupational stress and depression,and provide the scientific basis for improving the health level among power workers.MethodsA total of 509 thermal power plant workers from Hainan Province were selected as study subjects by multi-stage random cluster sampling method.The Job Content Questionnaire,the Effort-Reward Imbalance Questionnaire and the self rating depression scale（SDS）were used to evaluate and analyze the occupational stress and the depression by t-test,analysis of variance or Chi-square test.Multivariate logistic regression analysis was used to analyze the impact factors of occupational stress and depression.The serum IL-6,IL-8 and TNF-αlevels were detected by Luminex.Mann-Whitney U test or Kruskal-Wallis H test were used for univariate analysis.Spearman’s correlation analysis was used to analyze the relationship between occupational stress,depression and inflammatory factors.Results1.The detection rate of high JDC occupational stress was 42.63%.The multivariate logistic analysis indicated that the age,drinking status,operation mode and types of exposure to occupational hazards were influencing factors of occupational stress by the JDC model（P<0.05）.The detection rate of high ERI occupational stress was 86.44%.Gender and types of exposure to occupational hazards were influencing factors by the ERI model（P<0.05）.2.The SDS score was 35.15±9.08,depression was detected in 6.88%of the study.Multiple logistic regression analysis found that education level,sleep quality,physical exercise and the number of exposure to occupational hazards were influencing factors of depression.3.Occupational stress of JDC model was risk factors of depression（OR=2.769,95%CI:1.288～5.953）,but no significant correlation was found between occupational stress of ERI model and depression（OR=0.898,95%CI:0.319～2.531）.4.The M(P₂₅～P₇₅)of IL-6,IL-8 and TNF-αin serum were2.78（1.77～4.00）pg/ml,9.77（7.10～13.23）pg/ml and 8.18（6.18～11.26）pg/ml respectively.No association was observed between inflammatory factors and occupational stress or depression.Conclusions1.The detection rate of occupational stress in the ERI model was higher than the JDC model among power workers in Hainan Province.2.The depression rate was low and the degree of depression was mild in power workers in Hainan Province.3.Occupational stress of JDC model was risk factors of depression.4.The mediating effect of serum IL-6,IL-8 and TNF-αbetween occupational stress and depression has not been found in power workers of Hainan Province.