Fig. 3

Latent tree models for Traditional Chinese Medicine diagnostic patterns of functional dyspepsia constructed using the overall sample dataset (n = 400). “Y”s and “New variable”s are the latent variables in the latent tree models. The number in parentheses is the number of clusters in the latent variables from the probabilistic partition of participants. All latent variables in the above model contained two participant clusters. Based on the manifestation of probabilistic co-occurring clinical features, one of the clusters included participants that were classified into that latent variable, while the other included those that were not classified into that latent variable