Table 1

Patient baseline demographics and clinical characteristics

Patient baseline characteristics N = 46,490 episodes of care
Age, Yrs, mean (std)49 (13)
Female, N, %35 330 (76%)
Comorbidities
Hypertension, n (%)13 283 (29%)
Diabetes, n (%)4 529 (10%)
Charlson score*, mean (std)1.0 (0.9)
Filled prescription for select medications
Statins, n (%)7 952 (17%)
Non-statin lipid lowering medications, n (%)2 205 (5%)
Anti-TNF biologics, n (%)7 034 (15%)
Non-TNF biologics, n (%)73 (0.2%)
Methotrexate, n (%)14 337 (31%)
Non-methotrexate DMARDs, n (%)10 612 (23%)
Average oral prednisone-equivalent glucocorticoid dose, n (%)
 None28 929 (62%)
 > 0 and ≤ 7.5 mg/d15 037 (32%)
 >7.5 and ≤ 20 mg/d2 318 (5%)
 >20 mg/d206 (0.4%)
Distribution of lab values
CRP, mg/L, median (IQR)2.9 (6.5)
ESR, mm/hr, median, (IQR)8 (15)
LDL, mg/dL [mmol/L], median (IQR)108 (45) [2.8 (1.2)]
HDL, mg/dL[mmol/L], median (IQR)51 (20) [1.3 (0.5)]
  • *A summary comorbidity score to predict short-term mortality and other significant clinical outcomes.27

  • CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; HDL, high-density lipoprotein; LDL, low-density lipoprotein; TNF, tumour necrosis factor.