title: Association between mobile phone use and inattention in 7102 Chinese adolescents: a population-based cross-sectional study.
abstract: BACKGROUND
  The dramatic growth of mobile phone (MP) use among young people has increased interest in its possible health hazards in this age group. The aim of this cross-sectional study was to investigate the association between MP use and inattention in adolescents.
  
  
  METHODS
  A total of 7720 middle school students were involved in this cross-sectional study. Inattention was assessed as defined for the Attention Deficit component of Attention deficit/Hyperactivity disorder (ADHD) by the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev. [DSM-IV-TR]). The demographic characteristics and information on MP use were included in the questionnaire. Chi-square tests and logistic regression models were used to analyze the data.
  
  
  RESULTS
  In total, 7102 (91.99%) valid questionnaires were obtained. After adjusted for confounders, inattention in adolescents was significantly associated with MP ownership, the time spent on entertainment on MP per day, the position of the MP during the day and the mode of the MP at night. The strongest association between inattention and the time spent on the MP was among students who spent more than 60 minutes per day playing on their MP.
  
  
  CONCLUSIONS
  Our study shows some associations between MP use and inattention in Chinese adolescents. Decreasing MP usage to less than 60 minutes per day may help adolescents to stay focused and centered.
authors.forename: Feizhou
authors.initials: F
authors.lastname: Zheng
authors.forename: Peng
authors.initials: P
authors.lastname: Gao
authors.forename: Mindi
authors.initials: M
authors.lastname: He
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Changxi
authors.initials: C
authors.lastname: Wang
authors.forename: Qichang
authors.initials: Q
authors.lastname: Zeng
authors.forename: Zhou
authors.initials: Z
authors.lastname: Zhou
authors.forename: Zhengping
authors.initials: Z
authors.lastname: Yu
authors.affiliation: Department of Occupational Health, Key Laboratory of Medical Protection for Electromagnetic Radiation, Ministry of Education, Third Military Medical University, NO, 30 Gaotanyan Street, Chongqing 400038, People's Republic of China. zlepo1980@163.com.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D001288:Attention; D040421:Cell Phone / Q000706:statistics & numerical data*; D002681:China; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D013334:Students / Q000523:psychology; D011795:Surveys and Questionnaires