Patients
Infection stones, urinary calculi, non-infection stones
The study was approved by the ethics committee of the First Affiliated Hospital of Sun Yat-sen University, and the requirement for informed consent was waived (No.: IIT-2022-437). The clinical data of 2565 patients who underwent surgery for urinary calculi in our hospital from January 2011 to December 2015 and January 2017 to December 2021 were retrospectively analyzed (the test was not performed in 2016 due to mechanical reasons). After excluding patients with incomplete clinical data, 1168 patients were used for modeling. Baseline clinical data were obtained from medical records, including age, sex, urinalysis and urine culture, a total of 24 indicators. The composition of the stones was analyzed by Fourier transform infrared spectroscopy, and the main stone components were recorded. The stone component with the highest proportion was selected as the main stone component. When magnesium ammonium phosphate hexahydrate occurs, the main ingredient is determined to be magnesium ammonium phosphate hexahydrate, regardless of the proportion. Infection stones mainly include magnesium ammonium phosphate hexahydrate and calcium carbonate stones. Others were considered to be non-infection stones.