CHANGES IN THE PREVALENCE OF COALWORKERS' PNEUMOCONIOSIS AMONG MINERS AND EX-MINERS IN THE RHONDDA FACH 1951-61
AUTOR(ES)
Cochrane, A. L.
RESUMO
The changes in the prevalence of pneumoconiosis among miners and ex-miners in the Rhondda Fach in three age groups at three different times (1951, 1953, and 1961) have been investigated. The radiographs were re-read with the dates concealed, in a randomized order, by one observer. Later a stratified sample was classified for technique. The results of the randomized readings, standardized for technique, suggest an increase in prevalence in the older age groups and a slight decrease in the youngest.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1008215Documentos Relacionados
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