Chest ACCP Member Benefits
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Guest Access | Sign In via User Name/Password
This Article
Right arrow Full Text (PDF) Free
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Article Archive
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Amandus, H. E.
Right arrow Articles by Morgan, W. K. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Amandus, H. E.
Right arrow Articles by Morgan, W. K. C.
(Chest. 1973;63:736-743.)
© 1973 American College of Chest Physicians

The Pneumoconioses: Methods of Measuring Progression

H. E. Amandus 1; R. B. Reger 2; E. P. Pendergrass M.D.3; J. M. Dennis M.D.4; and W. K. C. Morgan M.D., F.C.C.P.5

1 Statistician, Appalachian Laboratory for Occupational Respiratory Diseases, National Institute of Occupational Safety and Health, Morgantown, West Virginia
2 Chief, Statistical Branch, Appalachian Laboratory for Occupational Respiratory Diseases, National Institute of Occupational Safety and Health
3 Professor Emeritus, Department of Radiology, University of Pennsylvania
4 Professor and Head, Department of Radiology, University of Maryland
5 Director, Appalachian Laboratory for Occupational Respiratory Diseases, National Institute of Occupational Safety and Health; and Professor of Medicine, Department of Medicine, West Virginia University

Progression of pneumoconiosis can be determined in life only by comparing chest roentgenograms taken at appropriate intervals. Two methods exist for comparing the radiographs: (1) by placing the films side-by-side with the dates on which the examinations were made known to the interpreter; and (2) by interpreting each film independently in the absence of any knowledge of either the appearance or category of the other film of the pair. We determined progression rates using both methods in 381 working coal miners who had had two chest roentgenographic examinations made at an interval of approximately five years. Statistical analyses of the results obtained by the two methods showed that, while the side-by-side method was less variable, its use resulted in a significantly higher progression rate. The independent method was more variable, but less biased. Both methods demonstrated geographic variation in progression for different regions; West Virginia miners showed the most rapid progression. At present, and mainly for reasons of practicality, the side-by-side method is to be preferred.




This article has been cited by other articles:


Home page
 Occup. Environ. Med.Home page
V C dos S Antao, E L Petsonk, L Z Sokolow, A L Wolfe, G A Pinheiro, J M Hale, and M D Attfield
Rapidly progressive coal workers' pneumoconiosis in the United States: geographic clustering and other factors
Occup. Environ. Med., October 1, 2005; 62(10): 670 - 674.
[Abstract] [Full Text] [PDF]

Home page
 Occup. Environ. Med.Home page
H S Lee, W H Phoon, and T P Ng
Radiological progression and its predictive risk factors in silicosis
Occup. Environ. Med., July 1, 2001; 58(7): 467 - 471.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1973 by the American College of Chest Physicians.