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Table 2 Diagnostic delay and disease extension at diagnosis in patients with disease onset in different time periods

From: TNF inhibitors appear to inhibit disease progression and improve outcome in Takayasu arteritis; an observational, population-based time trend study

Disease onset

1990–1999

2000 − 2004

2005 − 2009

2010 − 2012

Patients, n

18

13

26

12

Diagnostic delay, months, mean (SD)

63 (41)

27 (35)

14 (18)

8 (7)

0–6 months, n (%)

0 (0)

3 (23)

14 (54)

6 (50)

7–12 months, n (%)

2 (13)

4 (31)

5 (19)

4 (33)

13–24 months, n (%)

3 (19)

2 (15)

3 (12)

2 (17)

>24 months, n (%)

12 (69)

4 (31)

4 (15)

0 (0)

Angiographic type at diagnosis, n (%)

 Pre-stenosis

0 (0)

2 (15)

4 (15)

4 (33)

 I

10 (56)

9 (69)

14 (54)

5 (42)

 2A

0 (0)

0 (0)

1 (4)

0 (0)

 2B

1 (6)

0 (0)

1 (4)

1 (8)

 3

0 (0)

0 (0)

1 (4)

0 (0)

 4

1 (6)

0 (0)

0 (0)

1 (8)

 5

6 (33)

2 (15)

5 (19)

1 (8)

Vascular lesions in total, n

63

32

62

26

Lesions per patient, n (mean/median)

3.5/3

2.5/2

2.4/2

2.3/2

Arterial stenosis, n (%)

51 (81)

28 (87.5)

45 (72.6)

19 (73.1)

Arterial occlusion, n (%)

7 (11.1)

3 (9.4)

7 (11.3)

2 (7.7)

Arterial dilation/aneurisms, n (%)

5 (7.9)

1 (3.1)

10 (16.1)

5 (19.2)

Patients with aneurysm, n (%)

2 (11.1)

1 (7.7)

3 (11.5)

1 (8.3)

  1. Patients with onset before 1990 and patients with unknown onset were not included