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Journal of Patient-Reported Outcomes
Fig. 3. | Journal of Patient-Reported Outcomes

Fig. 3.

From: Validation of the English version of the arrhythmia-specific questionnaire in tachycardia and arrhythmia (ASTA): a Rasch evaluation study

Fig. 3.

The person-item threshold distribution illustrates the targeting between person ability and item difficulty, i.e., the item parameters along the common logit scale. a Illustrates the distribution for the Arrhythmia-Specific questionnaire in Tachycardia and Arrhythmia (ASTA) Symptom scale and b Illustrates the distribution for the ASTA Health-Related Quality of Life scale. The item mean location is centralized at 0

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