Positive family history according to ASAS definition
|
Stratified by self-reported ethnicity
|
White
|
54
|
26
|
2.3 (1.4–3.9)
|
0.001
|
Asian
|
38
|
14
|
3.1 (1.6–5.8)
|
0.001
|
Other ethnicitiesa
|
2
|
1
|
2.3 (0.2–25.0)
|
0.509
|
Stratified by degree of family relationship
|
First-degree relatives
|
79
|
31
|
2.9 (1.8–4.5)
|
< 0.001
|
Only second-degree relatives
|
15
|
10
|
1.7 (0.7–3.8)
|
0.212
|
Positive family history of AS
|
Stratified by self-reported ethnicity
|
White
|
37
|
6
|
7.1 (2.9–17.1)
|
< 0.001
|
Asian
|
35
|
7
|
5.7 (2.5–13.2)
|
< 0.001
|
Other ethnicitiesa
|
2
|
0
|
n.a.
|
n.a.
|
Stratified by degree of family relationship
|
First-degree relatives
|
61
|
9
|
7.8 (3.8–16.0)
|
< 0.001
|
Only second-degree relatives
|
13
|
4
|
3.7 (1.2–11.6)
|
0.023
|
Positive family history of AAU
|
Stratified by self-reported ethnicity
|
White
|
4
|
0
|
n.a.
|
n.a.
|
Asian
|
2
|
1
|
1.9 (0.2–20.7)
|
0.613
|
Other ethnicitiesa
|
0
|
0
|
n.a.
|
n.a.
|
Stratified by degree of family relationship
|
First-degree relatives
|
5
|
1
|
4.7 (0.5–40.1)
|
0.162
|
Only second-degree relatives
|
1
|
0
|
n.a.
|
n.a.
|
Positive family history of ReA
|
Stratified by self-reported ethnicity
|
White
|
2
|
2
|
0.9 (0.1–6.5)
|
0.924
|
Asian
|
1
|
3
|
0.3 (0.03–2.9)
|
0.302
|
Other ethnicitiesa
|
0
|
0
|
n.a.
|
n.a.
|
Stratified by degree of family relationship
|
First-degree relatives
|
3
|
2
|
1.4 (0.2–8.2)
|
0.735
|
Only second-degree relatives
|
0
|
3
|
n.a
|
n.a
|
Positive family history of IBD
|
Stratified by self-reported ethnicity
|
White
|
2
|
7
|
0.3 (0.05–1.2)
|
0.089
|
Asian
|
0
|
2
|
n.a.
|
n.a.
|
Other ethnicitiesa
|
0
|
1
|
n.a.
|
n.a.
|
Stratified by degree of family relationship
|
First-degree relatives
|
1
|
7
|
0.1 (0.02–1.0)
|
0.054
|
Only second-degree relatives
|
1
|
3
|
0.3 (0.03–2.9)
|
0.294
|
Positive family history of psoriasis
|
Stratified by self-reported ethnicity
|
White
|
16
|
15
|
1.0 (0.5–2.0)
|
0.938
|
Asian
|
2
|
2
|
0.9 (0.1–6.5)
|
0.926
|
Other ethnicitiesa
|
0
|
1
|
n.a.
|
n.a.
|
Stratified by degree of family relationship
|
First-degree relatives
|
15
|
14
|
1.0 (0.5–2.1)
|
0.949
|
Only second-degree relatives
|
3
|
4
|
0.7 (0.2–3.1)
|
0.620
|