Table 1 Summary of the patients demographic data and CT measurements

Number of the patients, (%)

196

99 (50.5%)

97 (49.5%)

 > 0.05

Age

52.54 ± 18.78

53.14 ± 19.03

51.93 ± 18.59

0.652

Pneumonia

Absent

114 (58.2%)

77 (39.3%)

37 (18.9%)

 < 0.001^#

Present

82 (41.8%)

20 (10.2%)

62 (31.6%)

CT-SS (mean, SD, min–max)

10.01 ± 9.18

(1–37)

9.37 ± 8.83

(1–37)

12.00 ± 10.18

(2–34)

0.268

The mean volume of thymus

(mean, SD)

(mL)

10.16 ± 8.63

12.34 ± 10.09

6.65 ± 3.59

0.027*

The mean maximum diameter of the nodular-type thymus

(mean, SD), mm

31.11 ± 11.89

33.79 ± 13.26

26.78 ± 7.78

0.048*

The mean thymus density

(mean, SD) HU

4.12 ± 32.59

2.16 ± 33.21

7.27 ± 32.26

0.605