Internet gaming disorder and comorbidities among campus-dwelling U.S. university students.

This study investigates the prevalence and associations of DSM-5 Internet Gaming Disorder (IGD) with sleep impairment, daytime functioning, psychiatric disorders, and health status among young adults living in student houses on the campus of an American university. A random sample of students living on the campus underwent phone interviews during the 2007 & 2015 academic years. The sample included 1,871 undergraduate and 1,113 graduate students (2,984 in total). Students were considered to have IGD if they recreationally spent ≥15 hours per week on an electronic device (39.4% of the students) and displayed ≥5 addiction-related symptoms; 5.3% of the sample met these 2 criteria. In bivariate analyses, IGD students had a greater proportion of suicidal thoughts (16.9% vs. 6.6%), suicide attempts (9.7% vs. 3.3%), major depressive disorder (9.7% vs. 3.0%), and social anxiety disorder (24.8% vs. 8.5%) than the no-IGD group. In multivariate analyses, IGD predicted non-restorative sleep, excessive fatigue, less close friends, depressive mood, bipolar disorder, social anxiety disorder, and a poor to fair health status. IGD is highly prevalent in this student population, affecting one in 20 students. IGD was associated with a variety of sleep, psychiatric, and health factors which may impact functioning and academic performance.