Sleep -- Physiological aspects

Out of 60 million Americans suffering from sleep disorder, an estimated 18 million have sleep apnea. According to the U.S. Department of Health & Human Services, sleep apnea is a chronic condition that disrupts a patient’s sleep. While the annual cost of treating sleep apnea patients in the United States is approximately $3.18 billion (including screening costs) it is estimated that untreated sleep apnea may cause $3.4 billion in additional medical costs. A polysomnography (PSG) is an all-night sleep study which monitors various physical functions during sleep including electrical activity of the heart, brain wave patterns, eye movement, muscle tone, body movements, and breathing. It is currently, the most accurate and sophisticated test for the diagnosis of sleep-disordered breathing (SDB), but also, the most expensive. The cost of an overnight sleep study is estimated between $900 and $3,000. In addition, the PSG is not mobile and has to be administered outside a patient’s home. The Long QT Syndrome (LQTS) is a
rhythm disorder that causes erratic (unpredictable) heartbeats. The LQTS has been linked to patients with the most severe form of sleep apnea. If LQTS is left untreated, sudden
cardiac death may occur.

The purpose of this research was to identify the impact of students’ choice of time
of day for class activity and their sleep quality on academic performance in
multidisciplinary distance education courses at a southeastern U.S. state college. The
research addressed the relationship of other individual student characteristics (i.e., age,
gender, race/ethnicity, educational background, or course workload) and external factors
(i.e., marital status, hours of employment, part-time or full-time status, or caretaker
responsibilities represented by the number of children and/or elderly that the student was
actively caring for in their home) to the students’ academic performance and to the
students’ choice of time of day for class activity and sleep quality. This study analyzed
distance education students’ Pittsburgh Sleep Quality Index (PSQI) Global Sleep Quality Scores, their demographic and external factor survey responses, a test grade, and the time of day that the student submitted their test. This study targeted the distance education student population, as they are part of a rapidly growing sector within higher education, and they had previously not served as the primary subjects in research regarding sleep quality and external factor impacts on academic success. Analyses of 208 distance education students resulted in the following research findings: sleep quality was found to be related to academic success, with significant findings of, for example, poorer sleep quality correlating with a lower test grade (r = -0.15; p = .03), likewise the number of hours spent working was related to academic success, with a significant finding of more hours spent working correlating with a lower grade (r = 0.377; p = .008). In this study most other factors were found to have no significant relationship with a students’ grades (age, gender, race/ethnicity, educational background, or course workload, marital status, or caretaker responsibilities). These research findings may enlighten students of the potential impacts of taking distance education classes if they anticipate having to work extensively or if they have, or expect to have, poor sleep quality. Additionally, educational institutions and faculty can learn ways to design better distance education courses and provide improved guidance for students to encourage academic success.