Key points are not available for this paper at this time.
Thirty rheumatologists graded five wrist films of patients with rheumatoid arthritis into six grades by a new method of assessment. Two-thirds of the interpretations fitted the same grade and 90% two adjacent grades.Arvi Larsen Rheumatism Foundation Hospital 181 20 Heinola 12 Finland
A. Larsen (1973) studied this question.