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. 2020 Mar 30;64(4):427–435. doi: 10.20945/2359-3997000000219

Table 2. Biochemical parameters of the patients undergoing total thyroidectomy.

Parameters Preoperative Postoperative (at first day) P value
Adjusted 8.99 ± 0.48 8.43 ± 0.63 < 0.0001
Ca (mg/dL) [7.92-10.2] [7.26-9.8]  
Mean ± SD [Min-Max]      
# of patients with 5 (11.6%) 22 (51.2%) 0.0001
hypocalcemia     95% CI
(< 8.5 mg/dL)     [1.54-7.49]
PTH (pg/mL) 48.35 ± 13.83 35.11 ± 19.16 < 0.0001
Mean ± SD [20.0-72.0] [5.0-79.0]  
[Min-Max]      
# of patients with hypoparathyroidy (< 12 pg/mL) 0 5 (11.6%) 0.055
hyperparathyroidy (> 88 pg/mL) 0 0 1.000

Ca: calcium; PTH: parathormone; CI: confidence interval.