Parathyroid Hormone Reduction Predicts Transient Hypocalcemia after Total Thyroidectomy: A Single-Center Prospective Study

Table 5

The accuracy of PTH reduction in predicting hypocalcemia and normocalcemia in the whole cohort, bilateral group, and female patients.

Variables	Hypocalcemia	Normocalcemia
Whole cohort^a
PTH reduction ≥ 65.58%	44 (TP)	39 (FP)
PTH reduction < 65.58%	7 (FN)	86 (TN)
Bilateral group^b
PTH reduction ≥ 71.00%	38 (TP)	25 (FP)
PTH reduction < 71.00%	10 (FN)	82 (TN)
Female patients^c
PTH reduction ≥ 71.00%	38 (TP)	25 (FP)
PTH reduction < 71.00%	8 (FN)	66 (TN)

^aSensitivity, 53.01% (95% CI 41.80–63.94); specificity, 92.47% (95% CI 84.60–96.67); positive predictive value, 86.27% (95% CI 73.13–93.85); negative predictive value, 68.80% (95% CI 59.81–76.62). ^bSensitivity, 60.32% (95% CI 47.20–72.18); specificity, 89.13% (95% CI 80.49–94.38); positive predictive value, 79.17% (95% CI 64.60–89.04); negative predictive value, 76.64% (95% CI 67.28–84.04). ^cSensitivity, 60.32% (95% CI 47.20–72.18); specificity, 89.19% (95% CI 79.28–94.88); positive predictive value, 82.61% (95% CI 68.05–91.68); negative predictive value, 72.53% (95% CI 62.00–81.12). FN, false negative; FP, false positive; TN, true negative; TP, true positive.