The measure proposed in this paper gets round thoseproblems by subjecting appropriately scaled mean ranks to atransformation that depends on the proportion of attributes thatthe rater must rank. The remainder of the paper describes thescaling and transformation operations and the use of the newmeasure for importance–performance analysis of a primaryhealth care service and then compares the results of this analysiswith those of an earlier study based on a direct measure ofimportance.