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Table 3 Summary of the follow-up of the thyroid nodule volume, patients’ symptoms, and the thyroid hormone level

From: Efficacy and safety of ultrasound (US)-guided radiofrequency ablation of benign thyroid nodules

  Pretreatment 1 month follow-up 3 months’ follow-up 6 months’ follow-up Test value P value Sig.
Thyroid profile Euthyroidism 38 (95.0%) 40 (100.0%) 40 (100.0%) 40 (100.0%) 6.076a 0.108 NS
Hyperthyroidism 2 (5.0%) 0 (0%) 0 (0%) 0 (0%)
Compressive symptoms scoring
(0–10)
Median (IQR) 8 (6–9) 4 (3–5) 2 (1–3) 0 (0–1) 105.952b 0.000 HS
Range 4–10 2–7 0–5 0–3
Cosmetic scoring
(1–4)
Median (IQR) 4 (3–4) 2 (1.5–2) 1 (1–2) 1 (1–1) 81.506b 0.000 HS
Range 2–4 1–4 1–4 1–4
Volume of the nodule Median (IQR) 15 (8.5–39.5) 5.5 (3.2–12) 3.3 (1.9–6.8) 2.2 (1.2–3.5) 104.985b 0.000 HS
Range 0.5–245 0.3–118 0.1–96 0.1–30
Volume reduction ratio (%) Mean ± SD 58.41 ± 15.27 73.26 ± 11.22 82.54 ± 12.49 92.900 0.000 HS
Range 29.52–96.23 40–94.14 36–98.28
  1. P value > 0.05, non-significant; P value < 0.05, significant; P value < 0.01, highly significant
  2. aChi-square test
  3. bFriedman test