Zheng Feizhou, Gao Peng, He Mindi, Li Min, Tan Jin, Chen Daiwei, Zhou Zhou, Yu Zhengping, Zhang Lei
Department of Occupational Health, Key Laboratory of Medical Protection for Electromagnetic Radiation, Ministry of Education, Third Military Medical University, Chongqing, People's Republic of China.
Shanhu Primary School, Chongqing, People's Republic of China.
BMJ Open. 2015 May 11;5(5):e007302. doi: 10.1136/bmjopen-2014-007302.
In the past decade, the mobile phone (MP) has become extremely popular among children and the average age at which children own their first MP has decreased. The potential health effects of children's exposure to MP have been the subject of widespread public concern. The aim of our study is to investigate the associations between MP use and well-being in children.
Cross-sectional study.
The questionnaires were completed in class with items regarding demographics, MP usage, self-reported well-being (symptoms were taken from the questionnaire of the HBSC survey) and possible confounding factors between October 2011 and May 2012 in Chongqing, China. Data were analysed using χ(2) tests and logistic regression models.
Among the 793 children invited to participate, 781 returned the questionnaires.
In total, 746 (94.1%) valid questionnaires were received. Fatigue was significantly associated with the years of MP usage (OR 1.85; 95% CI 1.07 to 3.22) and the daily duration of MP calls (OR 2.98; 95% CI 1.46 to 6.12). Headache was significantly associated with the daily duration of MP calls (OR 2.85; 95% CI 1.23 to 6.57). However, after adjusting for confounders only, the association between fatigue and MP usage remained statistically significant. There was no significant association between MP use and other physical symptoms in children.
The present study indicated that there was a consistent significant association between MP use and fatigue in children. Further in-depth research is needed to explore the potential health effects of MP use in children.
在过去十年中，手机在儿童中变得极其流行，儿童拥有第一部手机的平均年龄有所下降。儿童接触手机的潜在健康影响一直是公众广泛关注的话题。我们研究的目的是调查儿童使用手机与幸福感之间的关联。
横断面研究。
2011年10月至2012年5月期间，在中国重庆的课堂上完成问卷调查，内容涉及人口统计学、手机使用情况、自我报告的幸福感（症状取自健康行为与学校卫生调查的问卷）以及可能的混杂因素。使用χ²检验和逻辑回归模型分析数据。
在邀请参与的793名儿童中，781名返回了问卷。
共收到746份（94.1%）有效问卷。疲劳与手机使用年限（比值比1.85；95%置信区间1.07至3.22）和每日手机通话时长（比值比2.98；95%置信区间1.46至6.12）显著相关。头痛与每日手机通话时长显著相关（比值比2.85；95%置信区间1.23至6.57）。然而，仅在调整混杂因素后，疲劳与手机使用之间的关联仍具有统计学意义。儿童使用手机与其他身体症状之间无显著关联。
本研究表明，儿童使用手机与疲劳之间存在一致的显著关联。需要进一步深入研究以探索儿童使用手机的潜在健康影响。
