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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: J Affect Disord. 2016 Apr 20;200:67–73. doi: 10.1016/j.jad.2016.04.034

Table 1.

Comparison of fit from confirmatory undimensional and hierarchical bifactor models within bipolar I, bipolar II, and unipolar respondents.

AIC BIC logLik χ 2 df p
Bipolar I (n = 1154)
    Single dimension 10,034.968 10,135.988 –4997.484
    Hierarchical bifactor 9710.836 9862.366 –4825.418 344.132 10 < 0.001
Bipolar II (n = 494)
    Single dimension 4235.604 4319.655 –2097.802
    Hierarchical bifactor 4247.236 4373.312 –2093.618 8.368 10 0.593
Unipolar (n = 5695)
    Single dimension 51,595.56 51,728.51 –25,777.78
    Hierarchical bifactor 51,524.63 51,724.05 –25,732.32 90.934 10 < 0.001

Note. AIC = Akaike Information Criterion; BIC = Bayesian Information Criterion; logLik = Log-Likelihood.