Clinicopathological Risk Factors and Biochemical Predictors of Safe Discharge after Total Thyroidectomy and Central Compartment Node Dissection for Thyroid Cancer: A Prospective Study

Table 3

Predictabilities of intact PTH cut-offs according to serum calcium subgroup.

		All			Female			Male
Calcium (mg/dL)		≤7.9	8.0~8.5	≥8.6	≤7.9	8.0~8.5	≥8.6	≤7.9	8.0~8.5	≥8.6
Number of patients		131	446	240	115	366	189	16	80	51
Intact PTH; <10 (pg/mL)	Sensitivity	0.959	0.968	0.977	0.955	0.970	0.974	1.000	0.950	1.000
	Specificity	0.456	0.456	0.396	0.469	0.502	0.432	0.375	0.300	0.302
	PPV	0.696	0.558	0.475	0.708	0.615	0.547	0.615	0.311	0.211
	NPV	0.897	0.952	0.968	0.885	0.953	0.960	1.000	0.947	1.000
	Accuracy	0.740	0.668	0.604	0.748	0.713	0.656	0.688	0.463	0.412
Intact PTH; <20 (pg/mL)	Sensitivity	0.986	0.995	1.000	0.985	0.994	1.000	1.000	1.000	1.000
	Specificity	0.105	0.126	0.084	0.102	0.149	0.090	0.125	0.050	0.070
	PPV	0.589	0.447	0.379	0.596	0.490	0.436	0.533	0.260	0.167
	NPV	0.897	0.971	1.000	0.833	0.968	1.000	1.000	1.000	1.000
	Accuracy	0.603	0.487	0.413	0.609	0.530	0.466	0.563	0.288	0.216