“…Sleep disorder was significantly higher in shift workers than in non-shift workers Nurses (Kolo, Ahmed, Hamisu, Ajiya, & Akhiwu, 2017). Abnormal sleep durations and quality were associated with significantly increased risk of total mortality (P.-L. , increased risk of coronary heart diseases (Chernyshev, McCarty, & Chesson, 2018), impaired social relationships, drowsy driving, occupational accidents, and heightened risk of cardiovascular events (Lemma, Gelaye, Berhane, Worku, & Williams, 2012).Problems associated with long-term sleep disorder include the following such as thought retardation, memory loss, slow response, irritability and even the increase in the possibility of depression and suicidal tendency (Mieda & Sakurai, 2013). Number of sleep-disorder patients has been increasing exponentially and exceeds more than 25% of the total population in most countries(Hayaishi, 2011).…”