Correlations (Phi coefficient) and concordance rates (%) between assessments of hip involvement
| Tender hip joints | Inflammatory PDUS lesions | Structural PDUS lesions | BASRI-hip score ≥2 | |
|---|---|---|---|---|
| History of hip involvement | 0.076 (70%) | −0.106 (67%) | 0.046 (70%) | 0.333* (86%) |
| Tender hip joints | −0.081 (74%) | 0.193* (78%) | −0.123 (78%) | |
| Inflammatory PDUS lesions | −0.057 (74%) | 0.040 (81%) | ||
| Structural PDUS lesions | 0.203* (84%) | |||
↵* PDUS, Power Doppler Ultrasound; BASRI-h, Bath Ankylosing Spondylitis Radiology Score. p<0.05.