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《Chinese Journal of Industrial Medicine》 1988-01
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Intra-variation within a observer group in the application of 1986 Chinese Classification of Pneumoconioses

Ding Mao-bo,et al  
Pneumoconiosis is recognized by certainfairly distinctive roentgenographic appearancesand a dust-exposure history. Film readingcan easily be done under the guidance of awell designed classification system and a setof standard films, However, the variation ofresulis does exist among the observerswithin the expert group. This study is anattempt to determine the degree and chara-cteristics of intra-variation in filmreadingwithin a certain group of observers.
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