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Table 3 Sensitivity and specificity of baseline clinicolaboratory findings for the diagnosis of GCA in 55 patients studied prospectively

From: Colour duplex sonography of temporal arteries before decision for biopsy: a prospective study in 55 patients with suspected giant cell arteritis

Findings Sensitivity (%) Specificity (%)
Elevated ESR 86 9
Fever 41 42
New onset of headache 64 70
Diffuse musculoskeletal pain 32 55
Jaw claudication 14 100
Temporal artery tenderness 36 91
Acute visual impairement 23 94
Unilateral halo sign 82 91
Bilateral halo sign 41 100
  1. ESR, erythrocyte sedimentation rate; GCA, giant cell arteritis.