Fig. 1: Topic modeling revealed 91 topics and 14 groups.

Visual representation of the topics (circles) and groups (color); the size of each topic (circle) represents the relative number of discussions grouped in that topic. The x- and y-axes represent the two Uniform Manifold Approximation and Projection features onto which topics were dimensionally reduced to allow their visualization. CAC coronary artery calcium, CCTA computed tomography (CT) coronary angiography.