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.