Table 1 Comparison of demographics among three groups

Patient’s number

 Initial presentation

23(23.7)

30(30.9)

44(45.4)

0.050

 After follow up

28(28.9)

31(32.0)

38(39.1)

0.306

Age (years), Mean ± SD

 Initial presentation

49.4 ± 10.6

45.7 ± 10.0

49.5 ± 12.5

0.307

 After follow up

50.4 ± 9.9

46.3 ± 10.6

48.5 ± 12.8

0.386

Male

 Initial presentation

6/23(26.1)

6/30(20.0)

15/44(34.1)

0.405

 After follow up

8/28(28.6)

7/31(22.6)

13/38(34.2)

0.569

Duration (months), Mean ± SD

 Initial presentation

16.7 ± 27.6

10.2 ± 13.8

10.9 ± 15.4

0.378

 After follow up

14.9 ± 25.3

9.8 ± 13.8

11.8 ± 16.3

0.575

Follow-up time (months), Mean ± SD

 Initial presentation

48.4 ± 28.2

58.4 ± 32.7

54.9 ± 38.5

0.504

 After follow up

51.9 ± 29.8

58.3 ± 32.5

55.2 ± 38.9

0.745

Smoking,

 Initial presentation

2/23(8.7)

2/30(6.7)

4/44(9.1)

0.944

 After follow up

2/28(7.1)

2/31(6.5)

4/38(10.5)

0.803