Association between phosphorus‐to‐calcium ratio at ICU admission and all‐cause mortality in acute pancreatitis: Insights from the MIMIC‐IV database

Serum phosphorus and serum calcium are important electrolytes in the body. The relationship between them and acute pancreatitis (AP) has been previously discussed. However, the results seem to lack credibility due to the neglect of mutual influence between them. Thus, a comprehensive indicator is needed.