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. 2013 Jan 14;8(1):e54288. doi: 10.1371/journal.pone.0054288

Figure 1. Relative importance of PrEP attributes and marginal utilities* of attributes’ levels.

Figure 1

.3, −.3 is the Point Estimate of Alpha interval. *Conjoint analysis decomposes participants’ ranking of each scenario into the sum of contributions of the different PrEP attributes. Marginal utilities are the part-worth of a specific attribute in participants’ ranking of the scenarios. In other words, marginal utilities signify the extent to which a specific attribute contributes to the ranking of a scenario.