Fig. 2

Nomogram for predicting the choice of USC among the elderly with CVD. A Nomogram for the choice between primary care facilities and public hospitals. B Nomogram for the choice between public and private primary care facilities. As an example, locate the “Age” and draw a line straight upward to the Points axis to determine the score of “Age”. Then repeat the process for each variable. Next, sum the scores for each covariate, and locate the sum on the Total Points axis. Finally, based on the sum scores, draw a straight line down to the probability axis (primary care facilities and public clinics axes) to determine the likelihood of primary care facilities or public clinics