Fig. 2
From: Estimation of delay to diagnosis and incidence in HIV using indirect evidence of infection dates
Plots of estimated incidence rates (/year) of new HIV infections. Results from models fitted to the cohort of 3521 seroprevalent men who have sex with men. In a the incidence of new HIV infections is assumed to be constant in the window period, whereas in b and c it is allowed to vary. In a and b, a single delay-to-diagnosis distribution is fitted across all patients, whereas in c it is split according to white (black line), black (blue line) and other (red line) ethnic classifications. 95% credibility intervals are shown as dotted lines