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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Arch Sex Behav. 2016 Aug 8;45(8):1897–1905. doi: 10.1007/s10508-016-0804-5

Figure 2.

Figure 2

Test Characteristic Curve for FSFI-9 Item

This curve shows the conversion of each item response theory (IRT) score (mean of 0 and standard deviation of 1) to the corresponding 9-item FSFI summed score (ranges from 2 to 45). For example, an IRT score of 0 corresponds to a summed score of about 20 and an IRT score of −0.5 corresponds to a summed score of 15.