Quantifying traditional Chinese medicine patterns using modern test theory: an example of functional constipation

Table 4 Comparison of goodness of model fit

	Unidimensional model	Bidimensional model
–2 log-likelihood	12632.2	12405.6
Akaike information criterion	12712.2	12505.6
Bayesian information criterion	12894.8	12733.8

ISSN: 2662-7671