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. 2023 Feb 14;33(2):186–191. doi: 10.1089/thy.2022.0444

Table 2.

Incidences of Unfavorable Events After Conversion Surgery and Immediate Surgery

Variables CS group (N = 242)
IS group (N = 1739)
p
No. of events % [CI] No. of events % [CI]
Levothyroxine administration after surgerya 154 63.6 [57.9–70.0] 1134 65.2 [63.0–67.5] 0.631
Postoperative hematoma requiring reoperation 1 0.4 [0.1–2.9] 13 0.7 [0.4–1.3] 0.561
Transient vocal cord paralysis 26 10.7 [7.5–15.4] 151 8.7 [7.5–10.1] 0.292
Permanent vocal cord paralysis due tob 0 0.0 [0–NaN] 15 0.9 [0.5–1.4] 0.147
 Accidental transection or injury     4 0.2 [0.1–0.6]  
 Surgery for tumor invasion     11 0.6 [0.4–1.1]  
Transient hypoparathyroidism 60 24.8 [19.9–30.9] 362 20.8 [19.0–22.8] 0.157
Permanent hypoparathyroidismc 5 2.1 [0.9–4.9] 24 1.4 [0.9–2.1] 0.405
Recurrence in the neck          
 Contralateral lobe 0 0.0 [0–NaN] 6 0.3 [0.2–0.8] 0.360
 Lymph node 1 0.4 [0.1–2.9] 3 0.2 [0.1–0.5] 0.434
a

Patients who were administered levothyroxine before surgery were not included.

b

Persistent vocal code paralysis on laryngoscopy one year after surgery or longer.

c

Administration of vitamin D and/or calcium preparation one year after surgery or longer.

[CI], confidence interval; NaN, not a number.