PTH and Hypocalcemia: Multivariable logistic regression analysis results had revealed that high baseline PTH (OR: 1.003, 95% CI: 1.001–1.005, p < 0.001) and low baseline total cholesterol (OR: 0.987, 95% CI: 0.979–0.995, p = 0.002) were independently associated with postoperative hypocalcemia (Table 7).