Table 2 Differences of thyroid papillary cancer parameters in time periods of study

N

23

36

NS

18

106

0.001

Age

46.3 ± 3.2

45.2 ± 2.5

NS

45.7 ± 2.7

43.5 ± 3.9

NS

Gender

Male

6

10

NS

6

20

0.031

Female

17

26

NS

12

86

0.001

Tumor size (cm)^a

T

2.5 ± 0.8

1.9 ± 0.6

NS

0.7 ± 0.2

0.6 ± 0.1

NS

Nodal metastasis

N

8

11

NS

0

1

NS

Distant metastasis

0

0

NS

0

0

NS

Multicentric disease

5

8

NS

6

23

0.015

Subtype

Classical

11

16

NS

Follicular

10

17

NS

Others

2

3

NS