0707 THE EFFECT OF MORNINGNESS EVENINGNESS TYPE OF SHIFT WORKING NURSES ON SLEEP QUALITY, DEPRESSIVE SYMPTOM, AND OCCUPATIONAL STRESS

Abstract

Introduction: The purpose of this study is to evaluate the effect of morningness-eveningness type of shift working nurses on the sleep parameters, depressive symptoms and occupational stress. Methods: Data were collected by self-administrating questionnaires by 257 shift working nurses who work at one university hospital. The questionnaires were composed of baseline demographic data, Korean version of Morningness-Eveningness quesstionnaire, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, Beck Depression Inventory and Korean Occupational Stress Scale. Results: There were significant differences in Subjective Sleep Quality score between eveningness, intermediate, and morningness group. Morningness group showed tendency to have better sleep parameters such as sleep efficiency, PSQI Total score, and daytime sleepiness, but they were not statistically significant. There were no significant differences in Total sleep time, Depressive symptoms, Occupational stress including 8 sub categories between groups. Conclusion: Eveingness type shift working nurses showed lower Subjective Sleep Quality and tendency to have poor sleep efficiency, higher PSQI Total score, more severe daytime sleepiness than other types. However Morningness-Eveningness did not seem to be a decisive factor for total sleep time, depressive symptoms, and occupational stress of shift working nurses. Short-term medication, workers' chronotypes consideration, nap before night shift work might be helpful to improve mental health and quality of life for shift working nurses, especially Evening type.