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. 2011 May 9;11:285. doi: 10.1186/1471-2458-11-285

Figure 1.

Figure 1

Factor structure of the PCAT-CE, very short version (confirmatory factor analysis). Squares are the items; circles are the resulting factors; unidirectional arrows are factor loadings; and bidirectional arrows are either correlations between factors or residual variances. Standard errors are shown in parenthesis.