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Table 2 Relation between clinical and radiographic parameters and VAS pain: univariate linear regression

From: Radiographic damage in early rheumatoid arthritis is associated with increased disability but not with pain—a 5-year follow-up study

Variable

Inclusion

1 year

2 years

5 years

β (95% CI)

β (95% CI)

β (95% CI)

β (95% CI)

Female sex

−2.12 (−9.71, 5.46)

1.44 (−5.63, 8.50)

11.89 (3.95, 19.81)

6.16 (−1.55, 13.86)

Age (per year)

−0.27 (−0.51, −0.04)

−0.21 (−0.43, 0.01)

−0.28 (−0.53, −0.03)

0.04 (−0.21, 0.28)

Symptom duration (months)

−1.67 (−2.84, −0.50)

0.34 (−0.77 – 1.45)

0.18 (−1.10, 1.46)

0.24 (−0.99, 1.46)

Body mass index (per kg/m2)

0.04 (−0.97, 1.04)

-

0.43 (−0.61, 1.47)

-

RF seropositivity

−1.23 (−8.36, 5.90)

3.06 (−3.54, 9.66)

6.65 (−0.86, 14.16)

1.30 (−6.07, 8.63)

Anti-CCP seropositivity

−1.61 (−9.10, 5.89)

5.47 (−1.67, 12.60)

2.69 (−5.58, 10.96)

−1.64 (−9.52, 6.23)

SJC28

1.34 (0.67, 2.01)

1.90 (1.15, 2.66)

1.71 (1.00, 2.42)

1.85 (1.18, 2.52)

TJC28

1.41 (0.91, 1.91)

2.25 (1.63, 2.88)

2.19 (1.55, 2.83)

2.02 (1.39, 2.65)

ESR (per mm/h)

0.27 (0.14, 0.40)

0.35 (0.19, 0.51)

0.47 (0.27, 0.67)

0.34 (0.08, 0.60)

CRP (per mg/l)

0.27 (0.17, 0.38)

0.34 (0.16, 0.51)

0.39 (0.15, 0.64)

0.48 (0.25, 0.70)

SHS

−0.29 (−0.69, 0.10)

−0.02 (−0.26, 0.26)

0.12 (−0.11, 0.35)

0.05 (−0.09, 0.19)

ES

−0.12 (−1.39, 1.15)

0.22 (−0.48, 0.92)

0.44 (−0.11, 1.00)

0.22 (−0.08, 0.53)

JSNS

−0.44 (−0.94, 0.06)

−0.08 (−0.39, 0.23)

0.09 (−0.22, 0.40)

0.01 (−0.21, 0.23)

  1. Bold text indicates statistical significance with p-values <0.05. VAS visual analogue scale, CI confidence interval, RF rheumatoid factor, Anti-CCP anti-cyclic citrullinated peptide, SJC28 swollen joint count in 28 joints, TJC28 tender joint count in 28 joints, CRP C-reactive protein, ESR erythrocyte sedimentation rate, SHS Sharp-van der Heijde score, ES erosion score, JSNS joint space narrowing score