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. 2020 Jun 11;48(6):0300060520927199. doi: 10.1177/0300060520927199

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© The Author(s) 2020

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Comparison of sensitivity and specificity between serum calcium and intact parathyroid hormone (iPTH) concentrations to predict permanent hypoparathyroidism (pHPP). An iPTH concentration of ≤5.51 pg/mL at 24 hours after total thyroidectomy had 100% sensitivity and 85.1% specificity to predict pHPP. A postoperative serum calcium concentration ≤1.93 mmol/L was 63.6% sensitive and 78.1% specific to predict pHPP. The predictive value of iPTH was significantly higher than that of serum calcium.