[The influencing effects of effort reward imbalance on sleep disorders among metro staff in Guangzhou].

To detect the prevalence of sleep disorders among metro staff and to analyze influencing effects of effort reward imbalance (ERI) on it. In January 2015, subway driver, dispatcher and station operator from Guangzhou subway were selected as the research object in the whole group sampling method. A total of 1200 questionnaires were distributed and 1124 were valid questionnaires, and the effective questionnaire recovery rate was 93.7%. Based on the effort reward imbalance questionnaire and the self-administered sleep questionnaire, the data of the general demographic characteristics, life satisfaction, occupational stress and sleep status of the respondents were collected. Epi.data3.1 and spss19.0 were used for analyzing. A total of 1124 subway employees were surveyed, with an average age of (28±5) years; the working age was (4.5±3.6) years. ERI occupied 24.7% (278/1124) of the study population and sleep disorders as 42.2% (474/1124) . Single factor analysis showed that marital status, educational level, work position, life satisfaction and ERI could significantly influence sleep disorders of metro staff (<0.05) . Logistic regression showed that higher effort (adjusted =2.56, 95%: 1.79-3.68) , lower reward (adjusted =1.90, 95%: 1.34-2.68) and ERI (adjusted =2.33, 95%: 1.69-3.22) could increase the risk of sleep disorders after the confounding factors were controlled. ERI (adjusted =2.89, 95% : 1.80-4.64) , and over commitment (adjusted =4.64, 95%: 2.81-7.68) could influence the risk of sleep disorders independently when over commitment was evaluated as a moderating variable. Occupational stress as ERI could influence the risk of sleep disorders among metro staff. The situation should not be neglected for occupational health of metro staff.