College of Medicine, University of Ibadan, Ibadan, Nigeria.
J Environ Public Health. 2009;2009:739502. doi: 10.1155/2009/739502. Epub 2009 Oct 8.
Most schools in Ibadan, Nigeria, are located near major roads (mobile line sources). We conducted an initial assessment of noise levels and adverse noise-related health and learning effects.
For this descriptive, cross-sectional study, four schools were selected randomly from eight participating in overall project. We administered 200 questionnaires, 50 per school, assessing health and learning-related outcomes. Noise levels (A-weighted decibels, dBA) were measured with calibrated sound level meters. Traffic density was assessed for school with the highest measured dBA. Observational checklists assessed noise control parameters and building physical attributes.
Short-term, cross-sectional school-day noise levels ranged 68.3-84.7 dBA. Over 60% of respondents reported that vehicular traffic was major source of noise, and over 70% complained being disturbed by noise. Three schools reported tiredness, and one school lack of concentration, as the most prevalent noise-related health problems.
Secondary school occupants in Ibadan, Nigeria were potentially affected by exposure to noise from mobile line sources.
尼日利亚伊巴丹市的大多数学校都位于主要道路（流动线源）附近。我们对噪声水平以及与噪声相关的不良健康和学习影响进行了初步评估。
在这项描述性的、横断面研究中，我们从参与整个项目的 8 所学校中随机选择了 4 所学校。我们共发放了 200 份问卷，每个学校 50 份，评估与健康和学习相关的结果。噪声水平（A 加权分贝，dBA）用校准的声级计测量。对噪声水平最高的学校进行了交通密度评估。观察性检查表评估了噪声控制参数和建筑物物理属性。
短期、横断面的学校日噪声水平范围在 68.3-84.7 dBA。超过 60%的受访者报告说，车辆交通是噪声的主要来源，超过 70%的人抱怨受到噪声干扰。有 3 所学校报告称疲劳是最常见的与噪声相关的健康问题，而有 1 所学校则报告注意力不集中。
尼日利亚伊巴丹市的中学生可能受到来自流动线源的噪声暴露的影响。
