Respiratory illness in British schoolchildren and atmospheric smoke and sulphur dioxide 1973-7. II: longitudinal findings.
Respiratory illness in British schoolchildren and atmospheric smoke and sulphur dioxide 1973-7. II: longitudinal findings.
复制标题
英国学童的呼吸系统疾病与大气烟雾和二氧化硫 1973-7。
DOI：
10.1136/jech.35.3.168
复制
发表时间：
1981
影响因子：
6.3
通讯作者：
S. Chinn
中科院分区：
文献类型：
--
作者：
R. Melia;C. Florey;S. Chinn
一项研究是为了调查从1973年到1977年，在英格兰和苏格兰随机选择的28个地区的小学生中，大气烟雾和SO2水平的年度变化对健康变化的影响。健康的变化是通过从一次年度检查到下一次年度检查报告的呼吸系统疾病数量的变化来衡量的。每个时期有污染数据的地区数量分别为5、9、17和14个，在这些地区内，答复率从65%到74%不等。在每个阶段，分别对857、1436、2702和2036名儿童进行了研究，这些儿童均为6至11岁的白色种族，具有完整的性别、社会阶层和健康变化数据。1973- 1974年，污染水平最高，下降幅度最大。烟雾的最大年平均变化是从71.9微克/立方米减少到50.5微克/立方米，二氧化硫从94.2微克/立方米减少到47.6微克/立方米。然而，没有发现健康的改善与污染程度的降低之间存在联系。在随后的几年里，当污染水平较低且变化较小时，健康变化也与污染变化无关。因此，没有证据表明研究期间测量的水平对健康有害。
A study was set up to investigate the effects of annual changes in the levels of atmospheric smoke and SO2 on changes in health from 1973 to 1977 in primary schoolchildren from 28 randomly selected areas of England and Scotland. Changes in health were measured by taking the change in number of respiratory conditions reported from one annual examination to the next. The number of areas with data on pollution in each period was 5,9,17, and 14 respectively and within these areas the response rate varied from 65% to 74%. Altogether 857, 1436, 2702, and 2036 children respectively who were of white ethnic origin, aged 6 to 11, and had complete data on sex, social class, and changes in health were studied in each period. In 1973-4 the levels of pollution were highest and showed the greatest decline. The greatest annual mean change in smoke was a decrease from 71.9 to 50.5 microgram/m3 and in SO2 a decrease from 94.2 to 47.6 microgram/m3. However, no relation was found between improvement in health and decreasing levels of pollution. In subsequent years, when the levels of pollution were lower and showed smaller changes, change in health was also unrelated to changes in pollution. Thus no evidence was found to suggest that the levels measured during the study were harmful to health.