Hoek G, Brunekreef B, Meijer R, Scholten A, Boleij J
Int Arch Occup Environ Health. 1984;55(1):79-86. doi: 10.1007/BF00378070.
The influence of indoor nitrogen-dioxide exposure on respiratory symptoms of schoolchildren was investigated in a case-control study. The election method used was useful in obtaining symptomatic children, but insufficient in defining cases and controls without additional information. No relationship between indoor NO2 and respiratory symptoms was found. Bias may have been present, especially because of the high mobility of the study population. Attempts to estimate historical exposure were inaccurate. Therefore the results do not exclude that an association between indoor NO2 and respiratory symptoms exists.
在一项病例对照研究中，调查了室内二氧化氮暴露对学童呼吸道症状的影响。所采用的选择方法有助于获取有症状的儿童，但在没有额外信息的情况下，不足以界定病例和对照。未发现室内二氧化氮与呼吸道症状之间存在关联。可能存在偏差，尤其是由于研究人群的高流动性。估计历史暴露的尝试并不准确。因此，结果并不排除室内二氧化氮与呼吸道症状之间存在关联。
