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Table 1 Association between ultrasound characteristics and thyroid malignancy in the bivariate analysis (n = 263)

From: Diagnostic accuracy of ultrasound characteristics in the identification of malignant thyroid nodules

Ultrasound characteristic

Malignant, n (%)

Benign, n (%)

Total, n (%)

Crude odds ratio (95% CI)

p value

Size (cm)

 ≥ 2

14 (12.1)

102 (87.9)

116 (100.0)

0.9 (0.4–1.9)

0.854

 < 2

19 (12.9)

128 (87.1)

147 (100.0)

  

Taller than wide

 Taller than wide

16 (18.8)

69 (81.2)

85 (100.0)

2.3 (1.0–4.6)

0.046

 Wider than tall

17 (9.6)

161 (90.4)

178 (100.0)

  

Echogenicity

 Hypoechogenicity

22 (27.5)

58 (72.5)

80 (100.0)

5.9 (2.7–12.9)

< 0.001

 Iso/hyperechogenicity

11 (6.0)

172 (94.0)

183 (100.0)

  

Consistency

 Solid

32 (13.7)

202 (86.3)

234 (100.0)

4.4 (0.6–33.7)

0.145

 Cystic

1 (3.4)

28 (96.6)

29 (100.0)

  

Borders

 Irregular

12 (38.7)

19 (61.3)

31 (100.0)

6.3 (2.7–14.9)

< 0.001

 Regular

21 (9.1)

211 (90.9)

232 (100.0)

  

Halo

 Absent halo

26 (17.9)

119 (82.1)

145 (100.0)

3.5 (1.4–8.3)

0.004

 Halo present

7 (5.9)

111 (94.1)

118 (100.0)

  

Calcification

 Micro-calcification

12 (60.0)

8 (40.0)

20 (100.0)

15.9 (5.8–43.1)

< 0.001

 No micro-calcification

21 (8.6)

222 (91.4)

243 (100.0)

  

Vascularity

 Internal vascularity

16 (25.0)

48 (75.0)

64 (100.0)

3.6 (1.7–7.6)

0.002

 No internal vascularity

17 (8.5)

182 (91.5)

199 (100.0)

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