Table 4.
The relationship between the nail and DIP entheses at the finger level
| Relationship | n = 460 | r S (95% CI) | P-value |
|---|---|---|---|
| Nail disease | NAPSI and Nail US | 0.30 (0.22, 0.38) | <0.001 |
| NAPSI and Nail USD | 0.27 (0.18, 0.35) | <0.001 | |
| Nail and the DIP entheses | DIPUS and Nail US | 0.16 (0.07, 0.25) | 0.001 |
| DIPUS and Nail USD | 0.18 (0.09, 0.27) | <0.001 | |
| DIPUS and NAPSI | 0.05 (−0.04, 0.14) | 0.285 |
All significant correlations are shown in bold.
DIPUS: DUP US score; Nail US: nail US score; Nail USD: nail US score with power Doppler assessment; NAPSI: nail psoriasis severity index; rS: Spearman correlation.