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Effects of Long-Term Dust Exposure on Human Respiratory System Health in Minqin County, China

2014; Taylor & Francis; Volume: 70; Issue: 4 Linguagem: Inglês

10.1080/19338244.2013.872077

2154-4700

Jinyu Wang, Sheng Li, Shigong Wang, Kezheng Shang,

Occupational and environmental lung diseases

The aim of this study was to assess the effects of long-term sand dust exposure on human respiratory health. Dust events break out frequently in Minqin County, northwest China, whereas Pingliang City, northwest China, is rarely influenced by dust events. Therefore, Minqin and Pingliang were selected as sand dust exposure region and control area, respectively. The incidence of respiratory system diseases and symptoms was determined through a structured respiratory health questionnaire (ATS-DLD-78-A) and personal interviews. The subjects comprised 728 farmers (Minqin, 424; Pingliang, 304) aged 40 years or older, who had nondocumented occupational history to industrial dust exposure. Prevalences (odds ratio [OR], 95% confidence interval [CI]) of chronic rhinitis, chronic bronchitis, and chronic cough increased 9.6% (3.141, 1.776–5.555), 7.5% (2.468, 1.421–4.286), and 10.2% (1.787, 1.246–2.563) in Minqin comparison with Pingliang, respectively, and the differences were significant (p <.01).