Table 5 Ultrasound (A) and histopathological (B) features of PTC patients divided into two age subgroups according cut-off point 45 years old and cut-off point 55 years old. Data are presented as the number of observations (percent)

0.006^a

0.025^a

109 (56.5)

145 (43.9)

162 (52.9)

93 (42.9)

84 (43.5)

185 (56.1)

144 (47.1)

124 (57.1)

0.004^a

0.009^a

108 (56.0)

142 (42.9)

161 (52.6)

89 (41.0)

85 (44.0)

188 (57.1)

145 (47.4)

128 (59.0)

< 0.0001^a

< 0.0001^a

67 (34.7)

232 (70.3)

116 (37.9)

183 (84.3)

126 (65.3)

98 (29.7)

190 (62.1)

34 (15.7)

0.005^a

0.143

49 (25.4)

51 (15.5)

65 (21.2)

35 (16.1)

144 (74.6)

279 (84.6)

241 (78.8)

182 (83.9)

0.002^a

0.007^a

82 (42.5)

188 (57.0)

142 (46.4)

127 (58.5)

111 (57.5)

142 (43.0)

164 (53.6)

90 (41.5)

< 0.0001^a

< 0.0001^a

38 (19.7)

147 (44.6)

66 (21.6)

119 (54.8)

155 (80.3)

183 (55.5)

240 (78.4)

98 (45.2)

< 0.0001^a

< 0.0001^a

38 (19.7)

147 (44.6)

66 (21.6)

119 (54.8)

155 (80.3)

183 (55.5)

240 (78.4)

98 (45.2)

< 0.0001^a

< 0.0001^a

38 (19.7)

147 (44.6)

66 (21.6)

119 (54.8)

155 (80.3)

183 (55.5)

240 (78.4)

98 (45.2)

0.002^a

0.036^a

156 (80.8)

224 (67.9)

233 (76.1)

147 (67.7)

37 (19.2)

106 (32.1)

73 (23.9)

70 (32.3)

0.004^a

0.002^a

186 (96.4)

294 (89.1)

291 (95.1)

190 (87.6)

7 (3.6)

36 (10.9)

15 (4.9)

27 (12.4)

0.004^a

0.0005^a

169 (87.6)

255 (77.3)

259 (84.6)

165 (76.0)

22 (11.4)

56 (17.0)

43 (14.1)

35 (16.2)

2 (1.0)

19 (5.7)

4 (1.3)

17 (7.8)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)