The prevalence of vertebral fractures in spondyloarthritis: relation to disease characteristics, bone mineral density, syndesmophytes and history of back pain and trauma

Table 3 Analysis of congruence between conventional radiography and Vertebral Fracture Assessment for diagnosing vertebral fractures

VF vertebral fracture, VFA Vertebral Fracture Assessment
Patients with spondyloarthritis with or without VF who were diagnosed by radiography (Rx) or by VFA using dual X-ray energy absorptiometry are represented as absolute numbers. Agreement between VFA and Rx was excellent (κ = 0.898, standard error 0.036; p < 0.001). The diagnostic value of VFA in identifying Rx VF indicated sensitivity of 87 % [95 % confidence interval (CI) 74–95 %], specificity of 99 % (95 % CI 98–100 %), positive predictive value of 95 % (95 % CI 84–99 %), and negative predictive value of 98 % (95 % CI 96–99 %)

ISSN: 1478-6362