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. Author manuscript; available in PMC: 2016 Dec 13.
Published in final edited form as: Adm Policy Ment Health. 2013 Mar;40(2):76–86. doi: 10.1007/s10488-011-0376-6

Table 5.

Principal component analysis

Samples Eigenvalues of principal components
Proportion of variance explained
PC1 PC2 PC3 Q-LES-Q QIDS-SR WSAS
CS-PTR 2.33 0.409 0.258 0.778 0.136 0.086
STAR*D 2.29 0.403 0.309 0.762 0.135 0.103

Samples Eigenvector for PC1
Correlations with PC1
Q-LES-Q QIDS-SR WSAS Q-LES-Q QIDS-SR WSAS

CS-PTR 0.59 0.587 0.554 0.902 0.896 0.847
STAR*D 0.589 0.565 0.578 0.891 0.853 0.874