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Figure 3 | Population Health Metrics

Figure 3

From: Feasibility and psychometric properties of the German 12-item WHO Disability Assessment Schedule (WHODAS 2.0) in a population-based sample of patients with myocardial infarction from the MONICA/KORA myocardial infarction registry

Figure 3

Graphical assessment of item fit: Comparison of 1) expected probabilities for responding above the threshold based on the PCM (red line) and 2) observed response frequencies for groups of persons with close ability estimates ("x"s connected by dotted black line). If the observed frequencies rely on more than 20 persons, the x is drawn in black, while for smaller groups the x is grey.

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Population Health Metrics

ISSN: 1478-7954