The evaluation of published indexes and abstract journals: criteria and possible procedures.

This paper describes possible criteria by which the effectiveness of a published index may be evaluated and suggest procedures that might be used to conduct an evaluation of a published index. The procedures were developed for the National Library of Medicine and relate specifically to the recurring bibliographies produced by MEDLARS in various specialized areas of biomedicine. The methods described should, however, be applicable to other printed indexes and abstract journals. Factors affecting the performance of a published index are also discussed and some research projects relevant to the evaluation of published indexes are reviewed.