Sleep Quality and Associated Factors in Preclinical Medical Students in Faculty of Medicine Vajira Hospital

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Chotiman Chinvararak
Pantri Kirdchok
Wisarat Pruttithavorn
Jidapha Tiamungkornpan
Chaniporn Leelaprasertwong
Nicharee Wongsrinant
Thanakit Malaikritsanachalee
Tharadon Mungkhantiwongsaku
Theerameth Pruangmethangkul
Parichat Ditsomboon
Pornpailin Thammasupapong
Ratchapong Thongpool
Wongsathorn Seehirunwong


Objective: To study the prevalence and associated factors of poor sleep quality in pre-clinical-year medical students, Faculty of Medicine Vajira Hospital, Navamindradhiraj University.

Method: A cross-sectional descriptive study was conducted on preclinical-year medical students in 2015. Self-reported questionnaires consisted of demographic data, Thai version of the Pittsburgh sleep quality index, Stress-5 questionnaires, sleep hygiene questionnaires and 1-year life stress event questionnaire. Descriptive statistics were presented as frequency, percent and mean. The chi-square test, Fisher’s Exact test and logistic regression analysis were used to find the associated factors of poor sleep quality.

Results: There were 204 preclinical medical-student participants; 54.9% were female. Prevalence of poor sleep quality was 77.9%. Majority of participants had moderate level of stress (41.2%). Poor sleep hygiene consisted of late meal and evening caffeine consumption were found (75.5% and 43.6%, respectively). Associated factors of poor sleep quality were the severe to very severe level of stress (ORAdj= 11.50, 95%CI = 2.54-51.99), severity of life stress events, and evening caffeine consumption.

Conclusion: Prevalence of poor sleep quality in preclinical medical students was substantial. Its associated factors were stress level, severity of life stress events, and evening caffeine consumption. Surveillance and relevant preventive measures should be taken.


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