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. 2005 Jan 6;5:1. doi: 10.1186/1471-2288-5-1

Figure 1.

Figure 1

The Browne, MacCallum, Kim, Andersen and Glaser (2002) two-factor model The dashed arrows correspond to weak effects. Statistical identification of the model's coefficients requires exclusion of one dashed arrow from each factor as explained in Table 1.