Macpherson A, Roberts I, Pless I B
Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada.
Am J Public Health. 1998 Dec;88(12):1840-3. doi: 10.2105/ajph.88.12.1840.
The purpose of this study was to estimate children's exposure to traffic (number of streets crossed) and to determine the role of exposure in pedestrian injury.
Questionnaires were distributed to a random sample of 4080 first- and fourth-grade children in 43 Montreal schools.
When analyzed by police district, injury and exposure rates were positively correlated (r2 = 0.53). Crossings were similar by sex but increased with age and were inversely related to socioeconomic status.
These results suggest that although children's exposure to traffic could be reduced by transporting them to school, a more reasonable prevention strategy involves environmental changes.
本研究旨在评估儿童的交通暴露情况（穿过街道的数量），并确定暴露在行人受伤中所起的作用。
向蒙特利尔43所学校的4080名一、四年级儿童的随机样本发放问卷。
按警区分析时，受伤率和暴露率呈正相关（r2 = 0.53）。不同性别的过马路次数相似，但随年龄增长而增加，且与社会经济地位呈负相关。
这些结果表明，虽然通过送孩子上学可以减少他们的交通暴露，但更合理的预防策略是改变环境。
