Prevalence and risk factors of internet addiction among employed adults in Japan

Hideki Tsumura, Hideyuki Kanda, Nagisa Sugaya, Satoshi Tsuboi, Kenzo Takahashi

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Background: The prevalence of Internet addiction (IA) among employed adults has not been reported using a large sample. To clarify the actual status of addictive Internet use among employed adults, this study aimed to evaluate the prevalence and the risk factors of IA and at-risk IA among employed adults in Japan. Methods: This cross-sectional study surveyed all junior and senior high school personnel in Shimane Prefecture, a rural area in Japan. Eligible participants included 3,211 junior and senior high school personnel (1,259 men and 1,952 women). Participants completed a questionnaire on their activities and factors related to Internet use. Results: The prevalence of IA and at-risk IA was 0.03% and 4.82%, respectively. Furthermore, game playing was shown to be the Internet activity most closely associated with at-risk IA. Conclusions: This study showed that around 5% of school personnel in a rural area in Japan are at risk for developing addiction to the Internet and that using the Internet for game playing is related to at-risk IA. Our results suggest that employed adults should be instructed to use the Internet properly.

Original languageEnglish
Pages (from-to)202-206
Number of pages5
JournalJournal of epidemiology
Issue number4
Publication statusPublished - 2018
Externally publishedYes


  • Internet addiction
  • Online gaming
  • Prevalence
  • Risk factors
  • School personnel

ASJC Scopus subject areas

  • Epidemiology


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