Table 4 Univariate and multivariate analysis of Delphian lymph node metastasis in patients with papillary thyroid cancer

Age

44.7 ± 12.1 (19 to 73)

46.9 ± 10.6 (18 to 75)

0.175

<45

29 (54.7%)

104 (40.8%)

≥45

24 (45.3%)

151 (59.2%)

Multifocality

1.8 (1 to 11]

1.0 (1 to 10]

0.001

0.268

−0.034 to approximately 0.009

Tumor size(mm)

15.7 ± 10.4 (2 to 58)

10.5 ± 6.3 (0.5 to 38)

0.003

0.135

−0.010 to approximately 0.009

≤1

18 (34.0%)

143 (56.0%)

>1

35 (66.0%)

112 (44.0%)

Thyroditis

0.169

Present

14 (26.4%)

91 (35.7%)

Absent

39 (73.6%)

164 (64.3%)

Lymphvascular Invasion

0.001

0.005

0.047 to approximately 0.262

Present

30 (56.6%)

32 (12.5%)

Absent

23 (43.4%)

223 (87.5%)

Capsule Invasion

0.001

0.849

−0.066 to approximately ~0.080

Present

42 (79.2%)

131 (51.4%)

Absent

11 (20.8%)

124 (48.6%)

Central metastasis

53

88

0.001

0.001

0.157 to approximately 0.339

Contralateral central metastasis

28 (52.8%)

36 (14.1%)

Ipsilateral central metastasis

19 (35.8%)

52 (20.4%)

Non-metastasis

6 (11.3%)*

167 (65.6%)

Lateral metastasis

0.005

0.016

0.026 to approximately 0.250

Present

25 (47.2%)

26 (10.2%)

Absent

28 (52.8%)

229 (89.8%)