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. 2009 May 5;7:39. doi: 10.1186/1477-7525-7-39

Figure 3.

Figure 3

Z-scores scatter diagram for the items to which the examinee responded. Note. *p < .05; item number(observed score): Z-score. XXX: person estimation equal to ln(P/(1-P) = ln(.9/.1) = ln(9) = 2.3 logits.