Table 2.

US measurements of the fingers with psoriatic nail involvement compared to control.

	Ps (248/380)	PsA (168/310)	Control (n=298)	p
NP thickness (mm)	0.73± 0.14	0.72± 0.08	0.51 ± 0.12	<0.001
NB thickness (mm)	2.02±0.37	2.06±0.39	1.76 ± 0.22	0.003
Matrix thickness (mm)	1.96±0.36	2.01±0.24	1.88± 0.27	0.037
Tendon thickness (mm)	0.97±0.12	1.10±0.21	0.89±0.11	0.007

Results are presented as mean values and standard deviations (SD).

NP: nail plate; NB: nail bed;