这项研究有以下四个不同的部分:进行文献检索，以确定可能导致报告症状的可能原因，并帮助区分由空气质量引起的症状和由其他因素引起的症状；准备一份舒适度问卷（使用现有问卷作为提纲），并用它对正在进行空气质量测试的航班上的乘客和机组人员进行民意调查；制定测试协议，测量飞机机舱污染物和环境参数；并在8个商业航班的地面和飞行期间进行空气质量监测。这项研究的一个独特方面是测量客舱污染物和环境参数，同时向乘客和机组人员发放舒适度问卷。由于资金有限，该项目的目标不是收集大量数据，由此可以推断污染物水平和乘客反应之间的显著相关性。 但是，我们的目标是制定空气质量测试方案和舒适度问卷，以确定这类研究是否能够成功，并提出建议，以提高未来研究的整体有效性。

The study has the following four distinct parts:Conduct a literature search to determine possible causal factors that may contribute to reported symptoms and help differentiate between symptoms caused by air quality from those caused by other factors;Prepare a comfort questionnaire (using an existing questionnaire as an outline) and use it to poll passengers and crew on flights where air quality testing is being conducted;Develop a testing protocol to measure aircraft cabin contaminants and environmental parameters; andConduct air quality monitoring on the ground and during flight on eight commercial flights.A unique aspect of this study was the measurement of cabin contaminants and environmental parameters in parallel with the administration of comfort questionnaires to passengers and crewmembers. The objective of the project, because of limited funds, was not to collect large amounts of data, whereby significant correlations between contaminant levels and passenger responses could be deduced. But rather, the objective was to develop an air quality testing protocol and comfort questionnaire to determine if this type of research could be successful, and to make recommendations that could enhance the overall effectiveness of future studies.