Association between substandard classroom ventilation rates and students' academic achievement
Association between substandard classroom ventilation rates and students' academic achievement
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DOI：
10.1111/j.1600-0668.2010.00686.x
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发表时间：
2011-04-01
期刊：
影响因子：
5.8
通讯作者：
Shaughnessy, R. J.
中科院分区：
文献类型：
--
作者：
Haverinen-Shaughnessy, U.;Moschandreas, D. J.;Shaughnessy, R. J.
本研究主要探讨教室通风率与学习成绩的关系。美国西南部两个学区的100所小学被纳入了这项研究。利用在校期间测量的二氧化碳浓度，估计了五年级教室（每所学校一个）的通风率。此外，标准化考试成绩和与所研究班级学生相关的背景数据也从各区获得。在100间教室中，有87间教室的通风率低于2004年ASHRAE标准62的推荐标准。教室通风率与学生的学习成绩在0.9-7.1 l/s范围内呈线性相关。在该范围内，通风率每增加一个单位（每人1升/秒），学生通过标准化考试（即得分满意或以上）的比例预计将增加2.9% （95%CI 0.9-4.8%）数学和2.7%（0.5-4.9%）阅读。观察到的线性关系可能会随着通风率的增加而趋于平稳或改变方向，但由于观察数量有限，我们无法检验这一假设。要估计教室通风率高于7.1 l/s对学习成绩的影响，需要更大的样本量。实际意义本研究的结果表明，增加通风率，以建议的通风率在教室应该转化为提高学生的学习成绩。通风率与其他室内环境质量参数对学生健康和学习成绩的影响之间的关系，需要更多的研究来充分了解。实现建议的指导方针并更好地了解基本关系，最终将为学生和工作人员提供可持续和富有成效的学校环境。
P>This study focuses on the relationship between classroom ventilation rates and academic achievement. One hundred elementary schools of two school districts in the southwest United States were included in the study. Ventilation rates were estimated from fifth-grade classrooms (one per school) using CO2 concentrations measured during occupied school days. In addition, standardized test scores and background data related to students in the classrooms studied were obtained from the districts. Of 100 classrooms, 87 had ventilation rates below recommended guidelines based on ASHRAE Standard 62 as of 2004. There is a linear association between classroom ventilation rates and students' academic achievement within the range of 0.9-7.1 l/s per person. For every unit (1 l/s per person) increase in the ventilation rate within that range, the proportion of students passing standardized test (i.e., scoring satisfactory or above) is expected to increase by 2.9% (95%CI 0.9-4.8%) for math and 2.7% (0.5-4.9%) for reading. The linear relationship observed may level off or change direction with higher ventilation rates, but given the limited number of observations, we were unable to test this hypothesis. A larger sample size is needed for estimating the effect of classroom ventilation rates higher than 7.1 l/s per person on academic achievement.Practical ImplicationsThe results of this study suggest that increasing the ventilation rates toward recommended guideline ventilation rates in classrooms should translate into improved academic achievement of students. More studies are needed to fully understand the relationships between ventilation rate, other indoor environmental quality parameters, and their effects on students' health and achievement. Achieving the recommended guidelines and pursuing better understanding of the underlying relationships would ultimately support both sustainable and productive school environments for students and personnel.