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Table 4 Risk scoring system of thyroid nodules on the training and validating dataset

From: Diagnosis of thyroid nodules for ultrasonographic characteristics indicative of malignancy using random forest

  Benign Low suspicion Intermediate suspicion High suspicion
RF SRF<lc(0.265) lcSRF<0.5 0.5≤SRF<hc(0.784) SRFhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  110 4 41 11 35 47 12 898
  96.5% 3.5% 78.8% 21.2% 42.7% 57.3% 1.3% 98.7%
LR SLR<lc(0.267) lcSLR<0.5 0.5≤SLR<hc(0.838) SLRhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  123 17 13 16 42 81 20 846
  87.9% 12.1% 44.8% 55.2% 34.1% 65.9% 2.3% 97.7%
SVM SSVM<lc(0.277) lcSSVM<0.5 0.5≤SSVM<hc(0.850) SSVMhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  115 16 23 16 35 71 25 857
  87.8% 12.2% 59.0% 41.0% 33.0% 67.0% 2.8% 97.2%
NET SNET<lc(0.300) lcSNET<0.5 0.5≤SNET<hc(0.820) SNEThc
  benign malignancy benign malignancy benign malignancy benign malignancy
  125 19 14 20 37 61 22 860
  86.8% 13.2% 41.2% 58.8% 34.8% 65.2% 2.3% 97.7%
ELM SELM<lc(0.352) lcSELM<0.5 0.5≤SELM<hc(0.783) SELMhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  103 7 28 18 46 113 21 822
  93.6% 6.4% 60.9% 39.1% 29.0% 71.0% 2.5% 97.5%
KNN SKNN<lc(0.305) lcSKNN<0.5 0.5≤SKNN<hc(0.864) SKNNhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  117 13 15 16 49 114 17 817
  90.0% 10.0% 48.4% 51.6% 30.1% 69.9% 2.0% 98.0%
NB SNB<lc(0.188) lcSNB<0.5 0.5≤SNB<hc(0.869) SNBhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  138 45 15 25 18 67 27 823
  75.4% 24.6% 37.5% 62.5% 21.2% 78.8% 3.2% 96.8%
ADAB SADAB<lc(0.286) lcSADAB<0.5 0.5≤SADAB<hc(0.614) SADABhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  87 2 98 12 7 12 6 934
  97.8% 2.2% 89.1% 10.9% 36.9% 63.1% 0.6% 99.4%
LOG SLOG<lc(0.317) lcSLOG<0.5 0.5≤SLOG<hc(0.820) SLOGhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  113 13 19 12 52 118 14 817
  89.7% 10.3% 61.3% 38.7% 30.6% 69.4% 1.7% 98.3%
LDA SLDA<lc(0.256) lcSLDA<0.5 0.5≤SLDA<hc(0.958) SLDAhc
  benign malignancy benign malignancy benign malignancy benign malignancy
  120 27 18 10 41 100 19 823
  81.6% 18.4% 64.3% 35.7% 29.1% 70.9% 2.3% 97.7%
Management After a 6-month After 3-month sonographic   FNA biopsy
of thyroid sonographic follow-up or Fine Needle FNA biopsy or surgical
nodules follow-up Aspiration (FNA) biopsy   treatment
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