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. 1997 Oct;54(10):708–713. doi: 10.1136/oem.54.10.708

Mortality of Dutch coal miners in relation to pneumoconiosis, chronic obstructive pulmonary disease, and lung function.

J M Meijers 1, G M Swaen 1, J J Slangen 1
PMCID: PMC1128924  PMID: 9404317

Abstract

OBJECTIVES: To analyse the mortality patterns of former Dutch coal miners, focusing on coal workers' pneumoconiosis (CWP) and chronic obstructive pulmonary diseases (COPD) in relation to pre-existing impairment of lung function. METHODS: 3790 selected miners, medically examined between 1952 and 1963, were followed up to the end of 1991 with the municipal population registries and the causes of death from the death certificates were ascertained and converted to the codes from the ninth revision of the international classification of diseases (ICD-9). Mortality comparisons were made with the male population in The Netherlands, resulting in standardised mortality ratios (SMRs). 3367 miners had radiological manifestation of CWP at medical examinations. RESULTS: 80% of the miners died during the follow up period. Excess mortalities from CWP (SMR 4523) and COPD (SMR 179) were found. Coal miners without CWP also showed an increased mortality from COPD (SMR 2913). A diminished lung function (forced expiratory volume in one second (FEV1), or FEV1/FVC (forced vital capacity) ratio) at medical examination resulted in a significantly increased SMR for COPD (322 and 212 respectively) whereas normal lung function yielded expected mortalities from COPD. A positive correlation also emerged between diminished lung function and the SMR due to CWP. The body mass index (BMI) at the moment of medical examination was correlated with the risk of dying of COPD and CWP: a decreasing BMI resulting in an increased SMR. CONCLUSIONS: Not only infectious diseases and CWP but also COPD is an important cause of occupational mortality in miners with extensive exposure to coal mine dust. No obvious connection between pre-existing CWP and the COPD mortality exists. Impaired FEV1 and FEV1/FVC ratios are predictors of an increased risk of COPD death. The BMI seems to indicate the severity of the COPD, resulting in premature death.

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Selected References

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  1. Attfield M. D., Hodous T. K. Pulmonary function of U.S. coal miners related to dust exposure estimates. Am Rev Respir Dis. 1992 Mar;145(3):605–609. doi: 10.1164/ajrccm/145.3.605. [DOI] [PubMed] [Google Scholar]
  2. Attfield M. D. Longitudinal decline in FEV1 in United States coalminers. Thorax. 1985 Feb;40(2):132–137. doi: 10.1136/thx.40.2.132. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Becklake M. R. Chronic airflow limitation: its relationship to work in dusty occupations. Chest. 1985 Oct;88(4):608–617. doi: 10.1378/chest.88.4.608. [DOI] [PubMed] [Google Scholar]
  4. Coggon D., Inskip H., Winter P., Pannett B. Contrasting geographical distribution of mortality from pneumoconiosis and chronic bronchitis and emphysema in British coal miners. Occup Environ Med. 1995 Aug;52(8):554–555. doi: 10.1136/oem.52.8.554. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Kuempel E. D., Stayner L. T., Attfield M. D., Buncher C. R. Exposure-response analysis of mortality among coal miners in the United States. Am J Ind Med. 1995 Aug;28(2):167–184. doi: 10.1002/ajim.4700280203. [DOI] [PubMed] [Google Scholar]
  6. Marine W. M., Gurr D., Jacobsen M. Clinically important respiratory effects of dust exposure and smoking in British coal miners. Am Rev Respir Dis. 1988 Jan;137(1):106–112. doi: 10.1164/ajrccm/137.1.106. [DOI] [PubMed] [Google Scholar]
  7. Miller B. G., Jacobsen M. Dust exposure, pneumoconiosis, and mortality of coalminers. Br J Ind Med. 1985 Nov;42(11):723–733. doi: 10.1136/oem.42.11.723. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Muers M. F., Green J. H. Weight loss in chronic obstructive pulmonary disease. Eur Respir J. 1993 May;6(5):729–734. [PubMed] [Google Scholar]
  9. Quanjer P. H., Tammeling G. J., Cotes J. E., Pedersen O. F., Peslin R., Yernault J. C. Lung volumes and forced ventilatory flows. Report Working Party Standardization of Lung Function Tests, European Community for Steel and Coal. Official Statement of the European Respiratory Society. Eur Respir J Suppl. 1993 Mar;16:5–40. [PubMed] [Google Scholar]
  10. Ruckley V. A., Gauld S. J., Chapman J. S., Davis J. M., Douglas A. N., Fernie J. M., Jacobsen M., Lamb D. Emphysema and dust exposure in a group of coal workers. Am Rev Respir Dis. 1984 Apr;129(4):528–532. [PubMed] [Google Scholar]
  11. Soutar C. A., Hurley J. F. Relation between dust exposure and lung function in miners and ex-miners. Br J Ind Med. 1986 May;43(5):307–320. doi: 10.1136/oem.43.5.307. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Starzyński Z., Marek K., Kujawska A., Szymczak W. Mortality pattern in men with pneumoconiosis in Poland. Int J Occup Med Environ Health. 1995;8(3):223–229. [PubMed] [Google Scholar]

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