|
Variables
|
Cases (n = 506)
|
Controls (n = 509)
|
p
|
|---|
|
Age, years (mean ± SD)
|
59.80 ± 9.08
|
59.80 ± 10.63
|
0.038*
|
|
≤ 54
|
262 (51.78%)
|
260 (51.08%)
| |
|
> 54
|
244 (48.22%)
|
249 (48.92%)
| |
|
Gender
| | |
0.958
|
|
Male
|
135 (26.68%)
|
134 (26.33%)
| |
|
Female
|
371 (73.32%)
|
375 (73.67%)
| |
|
Clinical parameters
|
|
CRP (mg/L)
|
31.05 ± 40.25
| | |
|
RF (KIU/L)
|
164.09 ± 147.21
| | |
|
ESR (mm/h)
|
44.28 ± 30.86
| | |
|
CCP (RU/ml)
|
75.11 ± 60.78
| | |
- SD: standard deviation; RA: rheumatoid arthritis; SD: standard deviation; CRP: C-reaction protein; RF: rheumatoid factor; ESR: erythrocyte sedimentation rate; CCP: anti-cyclic citrullinated peptide
- p values were calculated from χ2 test
- *p < 0.05 indicates statistical significance
