Mobile Phone Dependence and its Association with Sleep Quality among Postgraduate Medical Students in a Tertiary Care Center in Kochi, Kerala, India
Background: Like every other technological invention, smartphones have brought both comforts and problems. It often results in both abusive and addictive behavior. Nomophobia means no mobile phone phobia that is fear of being out of mobile phone contact. Mobile phone dependence comes under ICD-10 of dependence disorders. Excessive or irrational use of smartphone is described to be smartphone addiction which can affect almost everyone. Medical postgraduate students are highly vulnerable to sleep deprivation because of duty schedules and tough academics. They are more prone to smartphone addiction since they need to use it for a lot of purposes including studies. This can, in turn, affect their sleep pattern. Objective: The aim of the study was to assess mobile phone dependence and its association with sleep quality among postgraduate medical students (MSs) in a tertiary care center in Kochi, Kerala, India. The study also aims to identify different sociodemographic factors associated with mobile phone dependence and sleep quality. Materials and Methods: This cross-sectional study was conducted among 233 postgraduate MSs (MD/MS/Diploma) including 1st, 2nd, and final years from August 2019 to December 2019 using a self-administered questionnaire consisting of three parts sociodemographic characters, test of mobile phone dependency (TMD), and Pittsburgh sleep quality index (PSQI). Results: The prevalence of mobile phone addiction in this study was found to be 44.9% and 51.9% were found to be poor sleepers as per their PSQI scores. A statistically significant association was found between overall TMD and PSQI scores. In the subgroups, poor sleep was observed in those with multiple mobile phones, headache, and visual disturbances. Conclusion: The study found out that excessive use of mobile phone was prevalent among postgraduate medical students. Mobile dependence was also found be associated with poor sleep quality. The study highlights the need to reduce mobile phone dependence and, thereby, improve the sleep quality of postgraduate students.
Key words: Mobile phone dependence, Pittsburgh sleep quality index, sleep quality, test of mobile dependency
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