Skip to main content

Table 1 Patient and physician characteristics at baseline

From: Feasibility of a standardized ultrasound examination in patients with rheumatoid arthritis: a quality improvement among rheumatologists cohort

Average patients N Mean SD Minimum Median Maximum
Age (years) 104 54.6 14.2 20.9 56.9 82.1
DAS28, score: 0-10 100 5.1 1.2 1.5 5.1 7.4
C-Reactive Protein, mg/l 100 20 22 0 12 97
Swollen joint count, 0-28 100 8 5.25 0 6 26
Tender joint count, o-28 100 11 7.8 0 10 28
VAS global (0-100 mm) 100 58 24.1 4 60.5 100
Disease duration (years) 76 8.8 7.7 0 6 32
Average physician N Mean SD Minimum Median Maximum
US examination (minutes) 13 33.2 11.3 14 32 65
Scoring percentage 13 90 10.2 48 93 100
Scanning experience (months) 13 54 50 3 36 180
Scanning experience (number) 13 807 1475 4 250 5000
Degree of Supervision (1 to 3)* 13 1.7 0.6 1 2 3
  1. * 1 = none, 2 = moderate, 3 = extensive