Examiners' Ratings of Color Transparencies of Clinical Signs Associated with Vitamin Deficiencies

Kodachrome slides of selected physical signs frequently associated with vitamin deficiencies were examined by seven physicians and one dentist, and independently rated according to written criteria. The results showed significant differences between examiners. In order to differentiate between severity ratings of two-step intervals 85 times out of 100, the findings indicated that the number of examiners needed to appraise each subjects color slide for a particular sign would be four or less for 30 of the 38 signs studied. Factors to be considered when utilizing Kodachrome slides in a nutrition study were reviewed.