|
Characteristics
|
RA patients (N = 160)
|
Controls (N = 1476)
|
P-value
|
|---|
|
Gender f/m (%women)
|
107/53 (67%)
|
761/715 (52%)
|
P < 0.001
|
|
Age in years
|
53(42 to 63)
|
38 (29 to 46)
|
P < 0.001
|
|
Current smokers (%)
|
57 (36%)
|
482 (33%)
|
P = 0.42
|
|
Disease duration (months)
|
3.5 (2.7 to 5.0)
|
-
|
-
|
|
IgM-rheumatoid factor positive (%)
|
103 (65%)
|
-
|
-
|
|
Anti-CCP positive (%)
|
93 (58%)
|
-
|
-
|
|
Any SE present (%)
|
116 (73%)
|
-
|
-
|
- Median (inter-quartile range)
- Comparison between groups was carried out using Mann-Whitney U-test and Fischers Exact test
- Anti-CCP, antibodies against cyclic citrullinated peptides; SE, shared epitopes; RA, rheumatoid arthritis
