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. 2018 Nov 16;11(3):242–246. doi: 10.1177/1941738118812454

Figure 1.

Figure 1.

Person-item map. The right side of the map represents the 7 items of the KOOS-JR, anchored at 0. The left side of the map represents persons. Persons are a mean of 3.56 logits higher than the mean item measure, which is anchored at 0. Each “#” is 3 persons; each “.” is 1 to 2 persons. KOOS-JR, short form of the Knee injury and Osteoarthritis Outcome Score.