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Fig. 2 | Health and Quality of Life Outcomes

Fig. 2

From: Validation of the Questionnaire to Identify Knee Symptoms (QuIKS) using Rasch analysis

Fig. 2

Fitting persons and items threshold distribution on the same logit scale. The distribution of the subjects’ estimate of knee symptoms-related experiences is in the upper histogram, with increasing levels of knee symptoms-related experiences from left to right on the x-axis. The lower histogram shows the distribution of the 13 items’ response categories threshold estimates, with higher levels of knee symptoms-related experiences from left to right on the x-axis

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