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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Test equating sleep scales: applying the Leunbach’s model

Fig. 1

Direct equating. The crosses in the contingency table indicate a non-zero value. Ai is any raw score for scale A, and Bj is any raw score for scale B. Am1 is the maximum possible total score for A, and Bm2 the maximum possible total score for B. The equating process shows that for any Ai, an estimate for the equated value in scale B is computed given the estimate of the person parameter for Ai

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