Fig. 4From: A multi-country comparative study of two treponemal tests for the serodiagnosis of syphilis amongst men who have sex with men (MSM): Chemo-luminescent assay vs Treponema pallidum particle agglutination assayPre & Post Test Probability Fagan's Bayesian nomogram based the study prevalence of treponemal antibodies (24%). Continuous line LR positive / Dash line LR NegativeBack to article page