Table 3.

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

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

ESR, erythrocyte sedimentation rate; GCA, giant cell arteritis.