Table 1 Summary of demographic feature

No. of patients

95

181

Age, years, \( \overline{\mathrm{x}} \) ± s

50.0 ± 10.6

44.3 ± 11.5

< 0.001

Sex

0.337

 Male

15 (15.79%)

38 (20.99%)

 Female

80 (84.21%)

143 (79.01%)

No. of nodules

109

242

Size, cm

3.37 ± 1.81

1.17 ± 0.87

< 0.001

 < 0.5

8 (7.34%)

23 (9.50%)

 0.5–1.0

13 (11.93%)

107 (44.21%)

 1.0–4.0

47 (43.12%)

106 (43.80%)

 ≥ 4.0

41 (37.61%)

6 (2.48%)