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Interferon-gamma release assay (IGRA)-positive rates among the four anatomic types of uveitis and between patients with and without retinal vasculitis. (A) The IGRA-positive rates were significantly different among the four anatomic groups (p = 0.001). (B) Patients with retinal vasculitis had higher positive IGRA rate (p < 0.001) than those without retinal vasculitis. p-values were obtained using chi-square tests.
