Fig. 3From: Artificial intelligence in the risk prediction models of cardiovascular disease and development of an independent validation screening tool: a systematic reviewA The bar chart of number analysis for articles per year (up to July 31, 2021). B The bar chart of number analysis for validated models per year (up to July 31, 2021). C The pie graph of papers’ geographical distribution. US, The United States of America; UK, The United Kingdom of Great Britain and Northern Ireland. D The bar chart of bias risk analysis with PROBASTBack to article page