incidence of pleural plaques attributable to asbestos exposure in humans can be modelled as: 1(t) = K(t-w)a for t>w K is a constant depending on intensity of asbestos exposure, a constant around 0.4 and w a minimum latency period of around 13 years. Lilis et al RMA ID: Radiographic 2790 asbestos Asbestos Not reported Duration of Morbidity reporting (1991) 046916 Abnormalities in insulators insulation exposure: asbestos exposure Asbestos workers n=368;<30 years producing parenchymal 439 (15.7%)= normal Insulators: and pleural changes. chest X-ray n=1712;30-39 years Effects of Prevalence of 668 (23.9%)= pleural n=710;≥40 years Duration from radiographic parenchymal changes Onset of abnormalities changes 325 (11.6%)= Exposure and increased significantly parenchymal changes Smoking. (p<0.001) from 38.6% Relationships of duration from onset of 1358 (48.7%)= both Dyspnea with exposure (<30 years) to parenchymal and Parenchymal 69.7% (≥40 years). pleural changes and Pleural Pleural abnormalities Fibrosis changes the comparative prevalence’s were 55.4% and 82.4%.Author conclusion: each of the three categories of duration from onset of exposure prevalence of interstitial pulmonary fibrosis was consistently
incidence of pleural plaques attributable to asbestos exposure in humans can be modelled as: 1(t) = K(t-w)a for t>w K is a constant depending on intensity of asbestos exposure, a constant around 0.4 and w a minimum latency period of around 13 years. Lilis et al (1991) RMA ID: 046916 Radiographic Abnormalities in Asbestos Insulators: Effects of Duration from Onset of Exposure and Smoking. Relationships of Dyspnea with Parenchymal and Pleural Fibrosis 2790 asbestos insulators 439 (15.7%)= normal chest X-ray 668 (23.9%)= pleural changes 325 (11.6%)= parenchymal changes 1358 (48.7%)= both parenchymal and pleural changes Asbestos insulation workers Not reported Duration of exposure: n=368;<30 years n=1712;30-39 years n=710;≥40 years Morbidity reporting asbestos exposure producing parenchymal and pleural changes. Prevalence of radiographic parenchymal abnormalities changes increased significantly (p<0.001) from 38.6% duration from onset of exposure (<30 years) to 69.7% (≥40 years). Pleural abnormalities changes the comparative prevalence’s were 55.4% and 82.4%.Author conclusion: each of the three categories of duration from onset of exposure prevalence of interstitial pulmonary fibrosis was consistently