Comparison of global positioning system (GPS) tracking and parent-report diaries to characterize children's time-location patterns
Comparison of global positioning system (GPS) tracking and parent-report diaries to characterize children's time-location patterns
复制标题
DOI：
10.1038/sj.jes.7500496
复制
发表时间：
2007-03-01
影响因子：
4.5
通讯作者：
Fenske, Richard A.
中科院分区：
文献类型：
--
作者：
Elgethun, Kai;Yost, Michael G.;Fenske, Richard A.
被调查者错误、低分辨率和研究参与者负担是暴露研究（如国家人类暴露评估调查（NHEXAS））中使用的日记时间表的已知局限性。全球定位系统（GPS）技术的最新进展已生产出足够便携、功能齐全且价格合理的跟踪设备，可用于暴露评估科学。在本研究中，将差分校正GPS （dGPS）跟踪装置与NHEXAS日记时间轴进行了比较。该研究还探讨了GPS如何通过确定哪些位置类别和哪些受访者最不可能记录“正确”的时间-位置反应来评估和改进这些日记时间表。共有31名3 - 5岁的儿童在周末醒着的所有时间里都戴着dGPS设备，而他们的父母则完成NHEXAS日记时间表，记录孩子的时间-地点模式。与dGPS相比，使用NHEXAS时间表的父母错误分类孩子的时间位置约占48%。两种方法的总体一致性为边际（kappa = 0.33 - 0.35）。dGPS设备发现，在24小时的研究期间，孩子们平均有76%的时间是在家里度过的。日记低估了孩子呆在家里的时间17%，而高估了孩子呆在其他地方、在家外、在其他地方以及在交通工具上的时间。外出时间和交通时间的日记数据与dGPS的响应一致性最低。与其他参与者相比，全职母亲和从事非技术性劳动的母亲的日记与dGPS的一致性较低。dGPS跟踪收集连续而不是分类（顺序）数据的能力也得到了证明。结论是，自动GPS跟踪测量可以提高暴露评估研究中时间-位置数据的质量和收集效率，尽管对于小队列。
Respondent error, low resolution, and study participant burden are known limitations of diary timelines used in exposure studies such as the National Human Exposure Assessment Survey (NHEXAS). Recent advances in global positioning system (GPS) technology have produced tracking devices sufficiently portable, functional and affordable to utilize in exposure assessment science. In this study, a differentially corrected GPS (dGPS) tracking device was compared to the NHEXAS diary timeline. The study also explored how GPS can be used to evaluate and improve such diary timelines by determining which location categories and which respondents are least likely to record "correct'' time-location responses. A total of 31 children ages 3 - 5 years old wore a dGPS device for all waking hours on a weekend day while their parents completed the NHEXAS diary timeline to document the child's time - location pattern. Parents misclassified child time - location approximately 48% of the time using the NHEXAS timeline in comparison to dGPS. Overall concordance between methods was marginal (kappa = 0.33 - 0.35). The dGPS device found that on average, children spent 76% of the 24-h study period in the home. The diary underestimated time the child spent in the home by 17%, while overestimating time spent inside other locations, outside at home, outside in other locations, and time spent in transit. Diary data for time spent outside at home and time in transit had the lowest response concordance with dGPS. The diaries of stay-at-home mothers and mothers working unskilled labor jobs had lower concordance with dGPS than did those of the other participants. The ability of dGPS tracking to collect continuous rather than categorical ( ordinal) data was also demonstrated. It is concluded that automated GPS tracking measurements can improve the quality and collection efficiency of time - location data in exposure assessment studies, albeit for small cohorts.