Objective To assess the effect of occupational stress on sleep quality of oil workers in Xinjiang,and provide a theoretical basis for improving physical and mental health and work efficiency of oil workers.
Methods A cluster random sampling survey on sleep quality and occupational stress related factors was conducted among 1 225 oil workers from No.1 Oil Production Company and No.2 Oil Production Company in Karamay of Xinjiang in April 2016.Chinese version of Effort-Reward Imbalance (ERI) questionnaire and Chinese Version of Pittsburgh Sleep Quality Index (PSQI) questionnaire were used and 1 136 valid questionnaires were received.
Results The mean PSQI score of the subjects was 5.12±1.84,of which 353 subjects (31.07%) had a score greater than or equal to 7.Regarding selected demographic variables,the sleep quality score was higher in the smoking group than that in the non-smoking group (6.13±2.74 vs 4.68±1.93,P<0.05),and it was also higher in the female group than that in the male group (5.51±2.14 vs 4.23±1.97,P<0.05),while the subjects categorized by income,educational level,and body mass index presented no differences in the PSQI score (P>0.05).There were significant differences in the PSQI score between the groups with high and low scores of effort,reward,and over-commitment (P<0.01).The PSQI score of the ERI index <1.0 group was lower than that of the ERI index≥1.0 group.According to the results of logistic regression analysis,female gender (OR=1.912,95% CI:1.409-3.175) and ERI index≥1.0(OR=9.786,95% CI:4.210-15.293) were the risk factors of sleep quality.
Conclusion The sleep quality of oil workers is not optimistic,and ERI could affect the sleep quality.
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