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Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: A novel method for expediting the development of patient-reported outcome measures and an evaluation of its performance via simulation

Fig. 2

Average MSE of item-to-domain correlation \( \rho \) for six items and moderately biased experts. Average mean squared error (MSE) for item-to-domain correlation \( \rho \) using OBID (solid blue line) and ordinal CFA (dashed red line) when P = 6 (number of items) and experts are moderately biased {\( {\rho}_0=\left(0.40,\;0.60,\;0.80,\;0.80,\;0.40,\;0.60\right)\Big\} \). The participant sample sizes are N = 50, 100, 200, and 500. The numbers of response categories are C = 2, 5, and 7, and the numbers of experts are K = 2, 3, 6, and 16. Note. OBID = Ordinal Bayesian Instrument Development; CFA = Confirmatory Factor Analysis

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