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Table 1 Comparisons between cases and controls in terms of Clinical characteristics using Student’s T-test, Mann Whitney, or odds ratio

From: The prevalence of thyroid dysfunction and autoimmune thyroid disease in patients with rheumatoid arthritis

Clinical characteristics

Controls (n = 248)

Median (25th–75th percentile), mean ± SD or n (%)

Cases (n = 250)

Median (25th–75th percentile), mean ± SD or n (%)

z/t/OR

P-value

Age (year)

51.0 ± 12.6

52.6 ± 12.7

 − 1.31

0.190

Females

223 (89.9%)

211 (84.4%)

1.65

0.081

Duration of RA disease (year)

 

5.0 (3.0–10.0)

  

Tender joint count

 

4.0 (0.0–13.0)

  

Swollen joint count

 

3.0 (0.0–11.0)

  

VAS

 

70.0 (0.0–100.0)

  

DAS-28-ESR

 

4.9 (1.9–6.6)

  

Laboratory finding

    

ESR (mm/h)

10.0 (6.0–14.2)

18.5 (10.0–41.0)

 − 8.9

 < 0.001

CRP (mg/l)

3.0 (2.5–4.0)

5.0 (2.0–18.0)

 − 6.6

 < 0.001

TSH (mIU/L)

2.3 ± 2.4

2.9 ± 2.9

 − 2.3

0.024

FT3 (pg/mL)

3.1 ± 1.3

3.9 ± 1.6

 − 5.9

 < 0.001

FT4 (ng/dl)

1.0 (0.9–1.3)

1.2 (1.0–1.6)

 − 6.0

 < 0.001

Anti-TPO (IU/ml)

8.9 (5.0–25.0)

17.3 (6.4–157.0)

 − 4.6

 < 0.001

Anti-CCP (U/ml)

 

15.9 (2.2–185.5)

  

Anti-MCV (U/ml)

 

28.0 (10.0–311.5)

  

RF positive

 

112 (45.2%)

  

RA Medications

    

Prednisolone

 

228 (91.2%)

  

Methotrexate

 

222 (88.8%)

  

Hydroxychloroquine

 

151 (60.4%)

  

Sulfasalazine

 

62 (24.8%)

  

Leflunomide

 

61 (24.4%)

  

Etanercept

 

7 (2.8%)

  

Adalimumab

 

4 (1.6%)

  
  1. RA rheumatoid arthritis, VAS Visual Analogue Scale, DAS-28-ESR disease activity score 28 for RA with ESR, ESR erythrocyte sedimentation rate, CRP C-reactive protein, TSH thyroid stimulating hormone, FT4 free thyroxin, FT3 free triiodothyronine, anti-TPO anti-thyroid peroxidase, anti-CCP anti-cyclic-citrullinated peptide antibodies, anti-MCV anti-mutated-citrullinated vimentin autoantibodies, RF rheumatoid factor. Using Student’s T-test for TSH and FT3 and Mann–Whitney for others. P-value < 0.05 was considered significant