Manfreda J, Cheang M, Warren C P
Department of Medicine, University of Manitoba, Canada.
Am J Ind Med. 1989;15(1):7-19. doi: 10.1002/ajim.4700150103.
In a survey of chronic respiratory symptoms and airflow obstruction of a rural population aged 20-65 years, the effects of both farming and, in particular, the exposure to grain dust on the respiratory health of the people was examined. Of the 1,892 subjects (82% of the eligible population) studied, 924 were males and 968 females, with half living in the town. Three groups were identified: current, former, and never farmers. Almost all current farmers were exposed to grain for, on average, 2 months a year. There was no difference in atopic status between the groups. While there was a strong association between most symptoms and smoking, there was no association between symptoms and exposure to grain and farming category once age and smoking had been taken into account. Results of this study suggest that farmers do not have chronic respiratory symptoms or impairment of lung function because of their exposure to grain dust. Lung function of former farmers might have been affected by farming, and this may reflect more involvement with livestock in the past.
在一项针对20至65岁农村人口慢性呼吸道症状和气流受限的调查中，研究了务农尤其是接触谷物粉尘对人们呼吸健康的影响。在研究的1892名受试者（占符合条件人口的82%）中，男性924名，女性968名，其中一半居住在城镇。确定了三组：当前务农者、曾经务农者和从未务农者。几乎所有当前务农者每年平均接触谷物2个月。各组之间的特应性状态没有差异。虽然大多数症状与吸烟之间存在强烈关联，但在考虑年龄和吸烟因素后，症状与接触谷物及务农类别之间没有关联。这项研究的结果表明，农民不会因为接触谷物粉尘而出现慢性呼吸道症状或肺功能损害。曾经务农者的肺功能可能受到务农的影响，这可能反映出过去更多地接触家畜。
