Trends in cell phone use among children in the Danish national birth cohort at ages 7 and 11 years
Trends in cell phone use among children in the Danish national birth cohort at ages 7 and 11 years
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丹麦全国出生队列中 7 岁和 11 岁儿童的手机使用趋势
DOI：
10.1038/jes.2016.17
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发表时间：
2016
影响因子：
4.5
通讯作者：
L. Kheifets
中科院分区：
文献类型：
--
作者：
Madhuri Sudan;J. Olsen;T. Sigsgaard;L. Kheifets
我们前瞻性地研究了丹麦国家出生队列中儿童使用手机的趋势。在7岁和11岁时对手机使用进行了评估，我们按年龄、出生年份以及与特定个人特征的关系对使用模式进行了研究。从7岁（37%）到11岁（94%），手机使用率有所增加。有一个明显的模式，更多的报告使用手机的儿童在7岁后出生的一年，但这一趋势消失在11岁。女孩和那些在7岁时使用手机的人在11岁时说话更频繁，持续时间更长。社会经济地位低和出生年份晚与7岁时的语音通话有关，但与11岁时无关。在11岁时，大多数人使用手机发短信和玩游戏，而不是语音通话。此外，7岁开始使用手机的儿童更有可能在11岁时成为重度手机语音用户，这使得早期使用手机成为累积暴露较高的标志，无论出生年份如何。随着手机技术的不断进步，新的使用模式将不断出现，儿童接触评估研究必须反映这些趋势。
We prospectively examined trends in cell phone use among children in the Danish National Birth Cohort. Cell phone use was assessed at ages 7 and 11 years, and we examined use patterns by age, by year of birth, and in relation to specific individual characteristics. There was an increase in cell phone use from age 7 (37%) to 11 years (94%). There was a clear pattern of greater reported cell phone use among children at age 7 years with later birth year, but this trend disappeared at age 11. Girls and those who used phones at age 7 talked more often and for longer durations at age 11 years. Low socio-economic status and later year of birth were associated with voice calls at age 7 but not at age 11 years. At age 11 most used cell phones for texting and gaming more than for voice calls. Further, children who started using cell phones at age 7 years were more likely to be heavy cell phone voice users at age 11 years, making early use a marker for higher cumulative exposure regardless of year of birth. As cell phone technology continues to advance, new use patterns will continue to emerge, and exposure assessment research among children must reflect these trends.