Poor Sleep Quality, Eveningness, and Anxiety Are Associated With Internet/Smartphone Addiction in Korean Adolescents

Objective: Internet addiction and smartphone are emerging mental health concerns in adolescents. To determine the factors related to these conditions, we investigated their associations with sleep quality, chronotype, patterns, daylight exposure, depression, anxiety.Methods: Self-rated questionnaires, including Addiction Proneness Scale-Short Form, Smartphone Scale–short version, Insomnia Severity Index, Morningness–Eveningness Questionnaire, Epworth Sleepiness Scale, sleep-related Hospital Anxiety Depression were administered a study population of 1,610 Korean high school students. Multiple linear regression analyses performed evaluate internet addiction.Results: showed significant poor quality (β=0.094, p<0.001), eveningness (β=-0.071, p=0.006), less exposure (β=-0.066, p=0.005), anxiety (β=0.252, older age (β=0.295, p<0.001). was significantly associated (β=0.076, (β=-0.164, excessive daytime sleepiness (β=0.109, longer time bed on weekdays (β=0.057, p=0.024), shorter weekend oversleep (β=-0.081, (β=0.192, younger (β=-0.145, p<0.001).Conclusion: Our findings suggest that eveningness, can serve as predictors both seems be negatively whereas patterns. Additional studies regarding causal relations between needed.