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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Am Coll Surg. 2014 May 29;219(4):765–770. doi: 10.1016/j.jamcollsurg.2014.04.013

Table 3.

Propensity-Score Analysis Comparing Conventional and IONM Groups

Unadjusted Propensity Score Matched 1:1
Conventional IONM p Value Conventional IONM p Value
All thyroids (P+T) 1.4% (3115/228416) 1.9% (235/12562) <0.001 1.3% (144/11418) 1.8% (203/11286) 0.001
Partial thyroid 1.0% (987/101684) 1.6% (76/4710) <0.001 1.2% (49/4246) 1.7% (72/4168) 0.028
Total thyroid 1.7% (2129/127514) 2.0% (160/7873) 0.016 1.4% (103/7229) 1.8% (131/7138) 0.056
  Total thyroid without ND 1.3% (1440/111296) 1.8% (116/6366) <0.001 1.2% (73/5913) 1.6% (93/5804) 0.101
  Total thyroid with ND 4.2% (688/16217) 2.9% (43/1506) 0.010 4.5% (60/1340) 2.8% (38/1334) 0.030