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Table 2 Comparison of the incidence rates of developing various immune-mediated inflammatory diseases between AS patients and non-AS individuals

From: Risk of immune-mediated inflammatory diseases in newly diagnosed ankylosing spondylitis patients: a population-based matched cohort study

Autoimmune disease

Total

Event (%)

Total person-years

Incidence rate (/105 years)

IRR (95% CI)

Acute anterior uveitis

 Non-AS

307,265

420 (0.14)

1,233,168

34.1

Reference

 AS

28,335

643 (2.13)

103,487

583.6

17.14 (15.13–19.41)

Psoriasis

 Non-AS

307,048

508 (0.17)

1,231,732

41.2

Reference

 AS

30,240

176 (0.58)

111,703

157.6

3.82 (3.22–4.53)

Inflammatory bowel disease

 Non-AS

299,243

12 (0.004)

1,205,603

1.0

Reference

 AS

29,462

9 (0.03)

109,791

8.2

8.24 (3.47–19.55)

Crohn’s disease

 Non-AS

299,776

4 (0.001)

1,207,612

0.3

Reference

 AS

29,560

3 (0.01)

110,132

2.7

8.22 (1.84–36.75)

Ulcerative colitis

 Non-AS

308,500

8 (0.003)

1,238,652

0.6

Reference

 AS

30,793

7 (0.02)

114,074

6.1

9.50 (3.45–26.20)

Systemic lupus erythematosus

 Non-AS

308,500

40 (0.01)

1,238,580

3.2

Reference

 AS

30,517

29 (0.10)

113,090

25.6

88.20 (11.03–705.18)

Sjögren’s syndrome

 Non-AS

306,049

80 (0.03)

1,230,358

6.5

Reference

 AS

29,772

91 (0.31)

110,650

82.2

12.65 (9.37–17.08)

Rheumatoid arthritis

 Non-AS

305,326

112 (0.04)

1,226,848

9.1

Reference

 AS

27,531

190 (0.69)

102,233

185.9

20.36 (16.12–25.71)

Systemic sclerosis

 Non-AS

309,048

9 (0.003)

1,240,674

0.7

Reference

 AS

30,872

8 (0.03)

114,346

7.0

9.64 (3.72–25.00)

Dermatomyositis

 Non-AS

308,846

8 (0.003)

1,239,911

0.6

Reference

 AS

30,843

4 (0.01)

114,233

3.5

5.43 (1.63–18.02)

Polymyositis

 Non-AS

308,832

2 (0.001)

1,239,818

0.2

Reference

 AS

30,827

2 (0.01)

114,166

1.8

10.86 (1.53–77.10)

Thromboangiitis obliterans

 Non-AS

309,093

2 (0.001)

1,240,854

0.2

Reference

 AS

30,907

3 (0.01)

114,474

2.6

16.26 (2.72–97.31)

Behcet’s disease

 Non-AS

309,039

4 (0.001)

1,240,654

0.3

Reference

 AS

30,820

21 (0.07)

114,144

18.4

57.06 (19.59–166.24)

Pemphigus

 Non-AS

309,061

4 (0.001)

1,240,728

0.3

Reference

 AS

30,906

2 (0.01)

114,477

1.7

5.42 (0.99–29.59)

Sarcoidosis

 Non-AS

309,088

21 (0.01)

1,240,775

1.7

Reference

 AS

30,897

16 (0.05)

114,402

14.0

8.26 (4.31–15.84)

Vitiligo

 Non-AS

308,750

98 (0.03)

1,239,523

7.9

Reference

 AS

30,838

21 (0.07)

114,251

18.4

2.32 (1.45–3.72)

  1. Abbreviations: AS ankylosing spondylitis, IRR incidence rate ratio, CI confidence interval