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Table 1 Clinimetric, laboratory and ultrasound characteristics of study population at baseline and after 12 months follow-up

From: Hypovitaminosis D in recent onset rheumatoid arthritis is predictive of reduced response to treatment and increased disease activity: a 12 month follow-up study

Patients (N = 37) Baseline 12 months follow-up P-value
ESR (mm/h), mean ± SD 31 ± 21 13.9 ± 11 0.0001^
CRP (g/L), mean ± SD 13.6 ± 16 5.81 ± 4.71 0.003^
RF positivity, number (%) 31 (83) 31 (83) -
APCA positivity, number (%) 30 (81) 30 (8) -
Morning stiffness (minutes), mean ± SD 62 ± 48 20.8 ± 23 0.0001^
Ritchie index, mean ± SD 10 ± 8.2 2.5 ± 2.9 0.00001^
VAS pain (mm), mean ± SD 63 ± 24 31.9 ± 32 0.002^
VAS disease patient (mm), mean ± SD 58 ± 23 31 ± 27 0.0001^
EGA (mm), mean ± SD 54 ± 20 24.3 ± 20 0.0001^
Number of tender joints (0–44), median (range) 12 (0–35) 2 (0–19) 00001^
Number of swollen joints (0–44), median (range) 5 (0–22) 3 (0–21) 0.0001^
Number of tender joints (0–28), median (range) 8 (0–24) 4 (0–30) 0.0001^
Number of swollen joints (0–28), median (range) 5 (0-20 5 (0–32) 0.0001^
DAS 28 score, mean ± SD 5.18 ± 1 2.77 ± 1.14 0.0001^
Ultrasound Total Synovitis score, mean ± SD 25.7 ± 21.7 8.31 ± 6.2 0.0008^
Ultrasound Total power Doppler score, mean ± SD 3.3 ± 5.9 0.65 ± 1.22 0.005^
Ultrasound Total Erosion score, mean ± SD 1.34 ± 2.7 10.31 ± 9.8 ns^
Patients ≥1 erosion, number (%) 12 (32%) 18 (48%) ns*
X-Ray Erosion, +ve, number (%)/% 6 (16%) -  
  1. Results are shown as mean ± SD, median(min-max) or number(percentage) of patients, as appropriated. ^Wilcoxon test applied, *chi-squared test applied. P-value <0.05 are considered significant. ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; RF, Rheumatoid Factor; ACPA, anti-citrullinated protein antibodies; VAS, visual analogue scale; EGA, examinator’s global disease activity assessment; DAS28, 28-joint disease activity score.