Table 2.

Comparison between patients with early-onset arthritis and healthy subjects in relation to the number of cases of bone erosion and joint synovitis.

Patients, n = 127, Mean ± SDHealthy Subjects, n = 127 Mean ± SDp
No. subjects with synovial joint thickening in B-mode0.75 ± 0.436
N = 95		0.09 ± 0.294
N = 12		< 0.001
No. subjects with synovial joint vascularity in power Doppler0.50 ± 0.502
N = 64		0.04 ± 0.195
N = 5		< 0.001
No. subjects with bone erosion0.36 ± 0.483
N = 46		0.11 ± 0.314
N = 14		< 0.001
No. grade 1 bone erosions0.3 ± 0.903
N = 38		0.01 ± 0.089
N = 1		< 0.001
No. grade 2 bone erosions0.32 ± 0.711
N = 41		0.08 ± 0.270
N = 10		< 0.001
No. grade 3 bone erosions0.09 ± 0.334
N = 11		0.02 ± 0.152
N = 3		< 0.059*
No. grade 4 bone erosions0.02 ± 0.125
N = 2		0
N = 0		0.158*

  • N: absolute number.

  • ↵* Not significant.