Table 2.

Effect of baseline confounders on baseline mRSS and change over time. Values are expressed as coefficient (95% CI).

MeasurementEffect on Skin Score at Baseline, n = 751Effect on Skin Score Slope, n = 751
Age, per 10 years*1.00 (0.07, 1.93)−0.83 (−1.48, −0.18)
HAQ-DI score, per unit change3.32 (1.67, 4.97)−0.62 (−1.81, 0.57)
Functional Questionnaire, per unit change0.31 (0.14, 0.49)−0.08 (−0.20, 0.04)
Hemoglobin, per g/l−0.122 (−0.202, −0.041)0.028 (−0.0223, 0.079)
Platelets, per 109/l0.022 (0.007, 0.036)0.005 (−0.006, 0.016)
Plasma creatinine, per μmol/l0.007 (−0.009, 0.023)−0.015 (−0.022, −0.008)
Pulmonary hypertension−0.05 (−3.97, 3.86)−1.88 (−7.34, 3.59)
Pulmonary fibrosis−0.66 (−3.99, 2.68)−1.04 (−2.91, 0.82)
Cardiac involvement0.18 (−4.30, 4.65)−1.26 (−4.56, 2.04)
  • * Changes in skin score assessed per 10-year unit. HAQ-DI: Health Assessment Questionnaire-Disability Index.