Hessel P A, Melenka L S, Michaelchuk D, Herbert F A, Cowie R L
Department of Public Health Sciences, University of Alberta, Edmonton, Canada.
J Occup Environ Med. 1998 Nov;40(11):1007-12. doi: 10.1097/00043764-199811000-00012.
Respiratory symptoms, lung function, and radiographic changes among 100 actively employed electricians in Edmonton, Alberta, Canada, with 20 or more years of union membership were compared with those of 100 telephone workers. Posteroanterior chest radiographs were evaluated by two experienced chest physicians, with a third arbitrating films that were disagreed upon. Employment in a number of industrial sectors was compared for time and for time-weighted exposure to dust and fumes. Compared with telephone workers, electricians had more usual cough (odds ratio [OR] = 3.36; 95% confidence interval [CI], 1.36-8.31), usual phlegm (OR = 2.44; 95% CI, 1.01-5.86), chronic phlegm (OR = 2.74; 95% CI, 1.13-6.60), and shortness of breath (OR = 2.26; 95% CI, 1.10-4.67), but no differences in lung function. The prevalence of radiographic changes in both groups was low. The electricians had more radiographic changes, but only for the category "any change" was the difference statistically significant (OR = 5.2; 95% CI, 1.06-23.93). Only two electricians had small irregular opacities. Phlegm, chronic phlegm, and chest tightness were significantly associated with cumulative exposure to fumes in the gas and oil industry and to total industrial construction.
对加拿大艾伯塔省埃德蒙顿市100名工会会员年限达20年及以上的在职电工与100名电话工人的呼吸系统症状、肺功能及影像学变化进行了比较。由两名经验丰富的胸科医生对后前位胸片进行评估，对于意见不一致的胸片由第三名医生进行仲裁。对多个工业部门的就业时间以及粉尘和烟雾的时间加权暴露情况进行了比较。与电话工人相比，电工有更多的常见咳嗽（优势比[OR]=3.36；95%置信区间[CI]，1.36 - 8.31）、常见咳痰（OR = 2.44；95% CI，1.01 - 5.86）、慢性咳痰（OR = 2.74；95% CI，1.13 - 6.60）和呼吸急促（OR = 2.26；95% CI，1.10 - 4.67），但肺功能无差异。两组影像学变化的患病率都较低。电工有更多的影像学变化，但仅“任何变化”类别差异有统计学意义（OR = 5.2；95% CI，1.06 - 23.93）。只有两名电工有小的不规则阴影。咳痰、慢性咳痰和胸闷与天然气和石油行业以及整个工业建设中的烟雾累积暴露显著相关。
