Duration of observation.
The median duration of observation, defined as the actual number of years an individual was at risk during the study, was 4.0 years for patients in both treatment groups (Duration of observation (full analysis set)Duration of observation was the actual number of years a patient was at risk in the study, i.e., the time from when a patient was randomized in the study until they were confirmed as having seroconversion, withdrawn from the study, used antitrypanosomal therapy, or completed the study, whichever was the earliest. The duration of observation has been rounded to the nearest integer.One patient initiated treatment with benznidazole <0.5 years after randomization.IQR, interquartile range.