Abstract:
Sleep disturbance is one of the most common health-related effects of shift-work
particularly among health-care workers. Shift-work sleep disorder is a chronic condition that is
directly related to a person’s work schedule. It is characterized by insomnia or sleepiness that
occurs in association with shift-work. The major problems related to shift-work sleep disorder
are adverse health consequences, diminished quality of life, diminished workplace performance
and increased accidents and errors. Even though many studies are done in different parts of the
world, there is lack of information on shift-work sleep disorder among nurses in the study area.
Objective: To determine the magnitude of shift work sleep disorder and associated factors
among nurses working at public hospitals of Harar City and Dire Dawa Administration.
Method: Institutional based cross-sectional study was conducted among 392 randomly selected
nurses from June 1-30, 2021. Structured interviewer guided self-administered questionnaire was
used for data collection and tool was adopted from previous study in Ethiopia. The ICSD-3, BIS
and Epworth Sleepiness Scale were used to assess of shift-work sleep disorder. Data was entered
in EpiData 3.1 software and exported to SPSS-26 for analysis. Descriptive statistics were
computed and presented by table and graph. Binary logistic regression was used to see the
association between outcome and explanatory variables. In bivariate analysis, variables with
P<0.25 were included in multivariate analysis and variables with P<0.05 was considered
statistically significant. AOR with 95% CI was used to measure the strength of association.
Result: In this study, the magnitude of shift-work sleep disorder among nurses was 30.4% (95%
CI: 25.4-34.5). Female sex (AOR=2.37, 95% CI: 1.34, 4.18), average number of nights >11 per
month in last 12 months (AOR=2.27, 95% CI: 1.34, 3.84) and khat use in last 12 months
(AOR=4.99, 95% CI: 2.88, 8.65) were significantly associated with shift-work sleep disorder.
Conclusion: In current study, about one-third of the shift worker nurses had shift-work sleep
disorder which was higher than study in Addis Ababa and it was significantly associated with
sex, average number of nights per month in last 12 months and khat use in last 12 months. Early
detection of shift-work sleep disorder, having policy on khat use, considering rest/recovery
while scheduling of work time should be addressed to prevent shift work sleep disorder
