Background
Sleep disorders in occupational groups will seriously affect their physical and mental health and work efficiency. Oil workers are a special occupational group, and their working environment factors may lead to occupational stress and job burnout, and the occurrence of sleep disorders.
Objective
To investigate the current situation of sleep disorders in oil workers and analyze the the effects of occupational stress, job burnout, and their interactions on sleep disorders.
Methods
From May to November 2019, 2300 oil workers were selected by multi-stage cluster sampling, and their occupational stress, job burnout, and sleep disorders were evaluated using the Effort-Return Imbalance (ERI), the Maslach Burnout Inventory－General Survey, and the Pittsburgh Sleep Quality Index (PSQI). The influencing factors of sleep disorders were analyzed using binary logistic regression, and the effect of the interaction between occupational stress and job burnout on sleep disorders were evaluated after adjusting for selected confounding factors.
Results
Of the 2300 questionnaires distributed, after excluding invalid questionnaires, a total of 2060 questionnaires were valid and the valid recovery rate was 89.57%. There were 1069 males (51.89%) and 991 females (48.11%), and the average age was (40.89±8.22) years old. The prevalence rate of sleep disorders among the oil workers was 34.76%, and the differences among different gender, age, working age, type of work, shift system, education and marital status groups was statistically significant (P < 0.05); 986 (47.86%) workers experienced occupational stress, and the prevalence rates were higher in males (57.06%), age group ≥45 years (52.63%), technical secondary school and below education group (51.87%) ,working age group > 15 years (50.47%), oil transportation workers (50.95%), shift workers (56.34%), and workers with a monthly income > 4000 yuan (51.70%); 1749 workers (84.90%) experienced job burnout, of which the prevalence rate of moderate burnout was higher (50.68%). Except the subjective sleep quality of oil workers between different occupational stress groups ( Z=−1.02,P=0.308), the total score of PSQI and the scores of remaining dimensions were varied among different occupational stress and job burnout groups (P < 0.05). The results of multiple regression analysis found that being females, age ≥ 30 years, working age ≥ 15 years, oil transportation workers, shift work, severe burnout, and occupational stress were associated with an increased risk of reporting sleep disorders ( P<0.05); the interaction between occupational stress and severe burnout led to a 11.403-fold increase in the risk of reporting sleep disorders (OR=11.403, 95%CI: 5.107-25.462).
Conclusion
Oil workers are experiencing poor sleep quality, and occupational stress, job burnout and their interaction would increase the risk of sleep disorders.
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