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Table 4 Changes of PTH before and after operation

From: Comparison of parathyroid hormone kinetics in endoscopic thyroidectomy via bilateral areola with open thyroidectomy

 

ETBAA

OTA-L

OTA-H

Preoperative (pg/mL)

49.18 ± 23.18

52.49 ± 20.34

51.97 ± 31

15 min postoperative (pg/mL)

30.84 ± 17.55**

31.27 ± 22.66£

23.01 ± 19.07#

  1. *P < 0.05, **P < 0.01; analysis of the total three groups with Cochran’s and Mantel-Haenszel Chi-square (χCMH2) test, while the variable of side was controlled
  2. #P < α’, analysis of group ETBAA and group OTA-H with χCMH2 test, α’ = α/4 = 0.0125
  3. £P < α’, analysis of group OTA-L and group OTA-H with χCMH2 test, α’ = α/4 = 0.0125