Söderqvist Fredrik, Carlberg Michael, Hardell Lennart
Department of Oncology, University Hospital, Institute of Clinical Medicine, Orebro University, SE-701 85 Orebro, Sweden.
Environ Health. 2008 May 21;7:18. doi: 10.1186/1476-069X-7-18.
Despite the last years of rapid increase in use of wireless phones little data on the use of these devices has been systematically assessed among young persons. The aim of this descriptive cross-sectional study was to assess use of wireless phones and to study such use in relation to explanatory factors and self-reported health symptoms.
A postal questionnaire comprising 8 pages of 27 questions with 75 items in total was sent to 2000 Swedish adolescents aged 15-19 years and selected from the population registry using a stratified sampling scheme.
The questionnaire was answered by 63.5% of the study subjects. Most participants reported access to a mobile phone (99.6%) and use increased with age; 55.6% of the 15-year-olds and 82.2% of the 19-year-olds were regular users. Girls generally reported more frequent use than boys. Use of wired hands-free equipment 'anytime' was reported by 17.4%. Cordless phones were used by 81.9%, and 67.3% were regular users. Watching TV increased the odds ratio for use of wireless phones, adjusted for age and gender. Some of the most frequently reported health complaints were tiredness, stress, headache, anxiety, concentration difficulties and sleep disturbances. Regular users of wireless phones had health symptoms more often and reported poorer perceived health than less frequent users.
Almost all adolescence in this study used a wireless phone, girls more than boys. The most frequent use was seen among the older adolescents, and those who watched TV extensively. The study further showed that perceived health and certain health symptoms seemed to be related to the use of wireless phones. However, this part of the investigation was explorative and should therefore be interpreted with caution since bias and chance findings due to multiple testing might have influenced the results. Potentially this study will stimulate more sophisticated studies that may also investigate directions of associations and whether, or to what degree, any mediation factors are involved.
尽管近年来无线电话的使用迅速增加，但针对年轻人使用这些设备的情况，几乎没有进行过系统评估。这项描述性横断面研究的目的是评估无线电话的使用情况，并研究其使用与解释因素及自我报告的健康症状之间的关系。
一份包含8页、27个问题、共75项内容的邮政问卷被寄给了2000名年龄在15至19岁之间的瑞典青少年，这些青少年是使用分层抽样方案从人口登记册中选取的。
63.5%的研究对象回复了问卷。大多数参与者表示可以使用手机（99.6%），且使用频率随年龄增长而增加；15岁的参与者中有55.6%、19岁的参与者中有82.2%是经常使用者。女孩通常比男孩报告的使用频率更高。17.4%的人报告“随时”使用有线免提设备。81.9%的人使用无绳电话，其中67.3%是经常使用者。在调整年龄和性别因素后，看电视会增加使用无线电话的比值比。一些最常报告的健康问题包括疲劳、压力、头痛、焦虑、注意力不集中和睡眠障碍。无线电话的经常使用者比不经常使用者更常出现健康症状，且自我感觉健康状况更差。
本研究中几乎所有青少年都使用无线电话，女孩比男孩使用得更多。年龄较大的青少年以及大量看电视的青少年使用频率最高。该研究还表明，自我感觉健康状况和某些健康症状似乎与无线电话的使用有关。然而，这部分调查具有探索性，因此应谨慎解释，因为多重检验导致的偏差和偶然发现可能影响了结果。本研究可能会促使开展更复杂的研究，这些研究也可能会调查关联方向以及是否涉及任何中介因素，或在何种程度上涉及中介因素。
