PTH and parathyroid gland carcinoma: The final equation developed by the logistic regression model to predict PC was as follows: P = \documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\frac{1}{1{+e}^{-\left(9.109+0.002\times PTH-0.367\times MMSE-1.847\times sex\right)}}$$\end{document}11+e-9.109+0.002×PTH-0.367×MMSE-1.847×sex, the closer the value of p is to 1, the higher the probability of parathyroid carcinoma in PHPT.