Iran Occupational Health

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  Background and Aims : Sleep is one of the most important day and night cycles and a complex biological pattern . It is necessary for humans physical and mental balance as sleep disturbance is often an early sign of mental illness. The purpose of this study is to survey and comparison of sleep disorders in shift workers of an automotive industry.

  Methods : This descriptive- analytical study has been conducted on 120 workers in an automobile manufacturing industry located in Tehran. Samples are selected using simple sampling. Data collection was included three questionnaires, demographic data, Insomnia Severity Index and Epworth Sleepiness Scale. The research data were analyzed using SPSS software.

 

  Results: Insomnia Severity Index scores 16.3 on the night shift with a standard deviation of 6 and 12.55 in the morning with a standard deviation of 5. T-test results showed that the severity of insomnia is higher in unmarried than married individuals (P =.004).Comparison scores on the night and morning shifts, using t- test, show that the average sleepiness scores in night shift is higher than morning shift, and is statistically significant (P =.048).

Conclusion: The results of this study indicated the high incidence of insomnia and sleepiness in workers in this vital industry. These results can be disturbing and may affect the quality of work and accident rates

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Background and aims: The present study was conducted to assess the role of sleepiness during the day (ESS) and sleep apnea in road accidents in Shahroud drivers.

Methods: In this cross-sectional study, 312 drivers of members of Shahroud's terminals were studied in 1392. Demographic, Pittsburgh Sleep Quality Index (PSQI) standard questionnaire with seven scales, Epworth Sleepiness Scale (ESS) questionnaire with 8 items and STOP BANG questionnaire with 8 questions were used. Data analysis was performed using SPSS statistical software version 18. 

Results: Nearly 16% of drivers had accident history in the past five years. The mean ± SD total score of sleep quality (PSQI) in drivers was 4/5 ± 2/85 and 27/5% of them had poor sleep quality. 5/6% of drivers had Epworth sleepiness scale over 10, which is clinically significant. 11/5% of drivers with STOP BANG> 3 were diagnosed in terms of respiratory disorders. ESS in drivers who had accident history in the past year (p= 0.004) and past five years (p= 0.003) and also perpetrate in accident (p= 0.012) was more than other drivers.

 Conclusion: Significant relationships were observed between ESS and perpetrate in accident and accident history in this study. However, this relationship between ESS and injury or death in accident was not observed. More than 10% of drivers with sleep apnea disorder were candidates for referral to sleep clinic.