Table 1 |
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Characteristics of patients with rheumatoid arthritis (RA), non-RA controls, and healthy controls |
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Patients with RA |
Non-RA controls |
Healthy controls |
|
|
|
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|
Number |
95 |
44 |
36 |
|
|
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|
Female, percentage |
68 |
57 |
56 |
|
|
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|
Age in years (SD) |
56 (11) |
54 (9.7) |
34 (15) |
|
|
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|
Current smoker, percentage |
23 |
27 |
14 |
|
|
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|
Former smoker, percentage |
40 |
43 |
0 |
|
|
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|
Body mass index |
25.8 (4.9) |
25.4 (4.4) |
NA |
|
|
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|
Number of teeth |
23.4 (6.3) |
24.2 (4.9) |
27.8 (2.9) |
|
|
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|
RA duration in years (SD) |
7.4 (5.9) |
0 |
0 |
|
|
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|
DAS28 (SD) |
2.4 (0.93) |
0 |
0 |
|
|
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|
Seropositive for IgM-RF, percentage |
53 |
0 |
NA |
|
|
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|
Seropositive for ACPAs, percentage |
71 |
NA |
NA |
|
|
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Medication for RA, percentage |
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|
|
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|
None |
6 |
100 |
100 |
|
|
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|
DMARDs |
79 |
0 |
0 |
|
|
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|
Anti-TNFα |
15 |
0 |
0 |
|
|
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|
ACPA, anti-citrullinated protein antibody; anti-TNFα, anti-tumor necrosis factor-alpha; DAS28, disease activity score 28 tender and swollen joint count; DMARD, disease-modifying anti-rheumatic drug; IgM-RF, immunoglobulin M-rheumatoid factor; NA, not assessed; SD, standard deviation. |
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Smit et al. Arthritis Research & Therapy 2012 14:R222 doi:10.1186/ar4061 |
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