办公室职员在接触通风系统得到改善的建筑物之前、接触后的六个月及三年时的病态建筑综合症症状患病率。
Prevalence of the sick building syndrome symptoms in office workers before and six months and three years after being exposed to a building with an improved ventilation system.
作者信息
Bourbeau J, Brisson C, Allaire S
机构信息
Epidemiology Research Group, Hôpital du St-Sacrement, Québec, Canada.
出版信息
Occup Environ Med. 1997 Jan;54(1):49-53. doi: 10.1136/oem.54.1.49.
OBJECTIVE
The prevalence of symptoms associated with the sick building syndrome (SBS) has recently been shown to decrease by 40% to 50% among office workers six months after they were exposed to a building with an improved ventilation system. The objective of the present study was to find whether the decrease in the prevalence of symptoms was maintained three years later.
METHODS
Workers from the same organisation occupied five buildings in 1991 and moved during that year to a single building with an improved ventilation system. All buildings had sealed windows with mechanical ventilation, air conditioning, and humidification. Workers completed a self administered questionnaire during normal working hours in February 1991 before moving, in February 1992 six months after moving, and in February 1995, three years after moving. The questionnaire encompassed symptoms of the eyes, nose and throat, respiratory system, skin, fatigue, and headache, as well as difficulty concentrating, personal, psychosocial, and workstation factors. During normal office hours of the same weeks, environmental variables were measured.
RESULTS
The study population comprised 1390 workers in 1991, 1371 in 1993, and 1359 in 1995, which represents 80% of the population eligible each year. The prevalence of most symptoms decreased by 40% to 50% in 1992 compared with 1991. This was similar in 1995. These findings were significant and remained generally similar after controlling for personal, psychosocial, and work related factors.
CONCLUSION
In this study, the decrease of 40% to 50% in the prevalence of most symptoms investigated six months after workers were exposed to a new building with an improved ventilation system was maintained three years later. The results of the present follow up study provide further support for a real effect of exposure to a new building with an improved ventilation system on the prevalence of symptoms associated with the SBS.
目的
近期研究表明，办公人员在接触通风系统得到改善的建筑物六个月后，与病态建筑综合征（SBS）相关的症状患病率下降了40%至50%。本研究的目的是确定三年后症状患病率的下降是否仍持续存在。
方法
1991年，同一组织的员工入驻五栋建筑，并于当年迁至一栋通风系统得到改善的单一建筑。所有建筑均有密封窗户，并配备机械通风、空调和加湿设备。员工在1991年搬迁前的2月正常工作时间、1992年搬迁六个月后的2月以及1995年搬迁三年后的2月完成了一份自我管理问卷。问卷涵盖了眼睛、鼻子和喉咙、呼吸系统、皮肤、疲劳和头痛等症状，以及注意力不集中、个人、心理社会和工作场所因素。在同一周的正常办公时间内，对环境变量进行了测量。
结果
研究人群在1991年有1390名员工，1993年有1371名，1995年有1359名，占每年符合条件人群的80%。与1991年相比，1992年大多数症状的患病率下降了40%至50%。1995年情况类似。在控制了个人、心理社会和工作相关因素后，这些发现具有显著性且总体上保持相似。
结论
在本研究中，员工接触通风系统得到改善的新建筑六个月后，所调查的大多数症状患病率下降40%至50%的情况在三年后仍持续存在。本随访研究的结果为接触通风系统得到改善的新建筑对与SBS相关症状患病率的实际影响提供了进一步支持。
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