Fig. 3

Output of the topological data analysis: a Topology of patient-patient networks. Filter metric was subdivided into 8 intervals with 80 % overlap. Several nodes were disconnected from the main graph. An inset graph in bottom right represents a lower resolution topology with 4 intervals and 60 % overlap. A subgroup 1, G ₁ , includes seven delirious patients with a low Mini-Mental State Examination (MMSE) score and regional anesthesia and G ₂ includes four delirious patients with medium MMSE score, high neuroticism, and low conscientiousness scores. G ₀ includes six patients with high MMSE, low neuroticism, and high conscientiousness scores; b Mapping clinical information on topology. Clinical variables, which showed significant correlations with filter metric, were visualized. The numbers within parenthesis right after the variable name indicate ranges of the node color. Abbreviations: HAS, Hamilton Anxiety Scale; HRDS, Hamilton Rating Scale for Depression