Temporal Arteritis: Likelihood Ratios
Introduction: also known as Giant Cell Arteritis.
The estimated 5-year probability of developing visual loss after initiating corticosteroid therapy was 1%; that of additional visual loss in patients who already had visual loss was 13%.
Symptoms not specific to TA: anorexia, arthralgia, fatigue, fever, temporal headache, myalgia or polymyalgia rheumatica, unilateral vision loss or any visual sx, vertigo
Signs not specific to TA: optic atrophy/neuropathy, fundoscopic abnormality, absent temporal artery pulse, anemia.
|Population / Calculator||Prevalence||Comments / Study / Link|
|Age < 50||0%||only 2/1435 patients with temporal arteritis were <50.
JAMA 2002 Jan 2;287(1):92-101. PMID 11754714
|Women||0%||more common than in men|
|Patients referred for TA biopsy||39%||JAMA. 2002;287:92-101. http://jama.ama-assn.org/cgi/content/full/287/1/92|