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首页> 外文期刊>Occupational and environmental medicine >Accuracy of task recall for epidemiological exposure assessment to construction noise.
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Accuracy of task recall for epidemiological exposure assessment to construction noise.

机译：对建筑噪声进行流行病学评估的任务召回准确性。

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摘要

AIMS: To validate the accuracy of construction worker recall of task and environment based information; and to evaluate the effect of task recall on estimates of noise exposure. METHODS: A cohort of 25 construction workers recorded tasks daily and had dosimetry measurements weekly for six weeks. Worker recall of tasks reported on the daily activity cards was validated with research observations and compared directly to task recall at a six month interview. RESULTS: The mean L(EQ) noise exposure level (dBA) from dosimeter measurements was 89.9 (n = 61) and 83.3 (n = 47) for carpenters and electricians, respectively. The percentage time at tasks reported during the interview was compared to that calculated from daily activity cards; only 2/22 tasks were different at the nominal 5% significance level. The accuracy, based on bias and precision, of percentage time reported for tasks from the interview was 53-100% (median 91%). For carpenters, the difference in noise estimates derived from activity cards (mean 91.9 dBA) was not different from those derived from the questionnaire (mean 91.7 dBA). This trend held for electricians as well. For all subjects, noise estimates derived from the activity card and the questionnaire were strongly correlated with dosimetry measurements. The average difference between the noise estimate derived from the questionnaire and dosimetry measurements was 2.0 dBA, and was independent of the actual exposure level. CONCLUSIONS: Six months after tasks were performed, construction workers were able to accurately recall the percentage time they spent at various tasks. Estimates of noise exposure based on long term recall (questionnaire) were no different from estimates derived from daily activity cards and were strongly correlated with dosimetry measurements, overestimating the level on average by 2.0 dBA.
机译：目的：验证建筑工人召回基于任务和环境的信息的准确性;并评估任务召回对噪声暴露估计的影响。方法：一组25名建筑工人每天记录任务，每周进行六周的剂量测定。工人对日常活动卡上报告的任务的召回已通过研究观察进行了验证，并在六个月的访谈中直接与任务召回进行了比较。结果：剂量计测量的平均L（EQ）噪声暴露水平（dBA）对于木匠和电工分别为89.9（n = 61）和83.3（n = 47）。将访谈中报告的任务完成时间百分比与每日活动卡计算得出的百分比进行了比较;在名义的5％显着性水平上，只有2/22个任务不同。根据偏见和精确度，从面试中报告的任务完成时间百分比的准确性为53-100％（中位数为91％）。对于木匠，从活动卡得出的噪声估计值（平均值为91.9 dBA）与从调查表得出的噪声估计值（平均值为91.7 dBA）没有差异。这种趋势也适用于电工。对于所有受试者，从活动卡和调查表得出的噪声估计值与剂量测量值密切相关。从问卷调查中得出的噪声估计值与剂量法测量值之间的平均差为2.0 dBA，并且与实际暴露水平无关。结论：执行任务六个月后，建筑工人能够准确地回忆起他们在各种任务上花费的时间百分比。基于长期召回（问卷）的噪声暴露估计值与日常活动卡得出的估计值没有差异，并且与剂量测定值密切相关，平均高出该值2.0 dBA。

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