Fig. 3

Graphical representation of the interaction analysis

The probability of malignancy and the hazard ratios for neoplasia onset in urban-rural areas across three provinces are shown for patients followed 22 years after ACS. a Unadjusted models. b Fully adjusted models (for age, gender, smoking, alcohol consumption, education level, baseline serum cholesterol, and presence of heart failure at admission). The risk of neoplasia onset by smoking status is also shown for comparison