Malaria Incidence per Year of Follow-up.

Incidence and relative risk estimated from a Poisson regression model with follow-up time as offset term. *Intention-to-treat analysis uses all evaluable subjects. All malaria episodes subsequent to initial treatment, including non-P. falciparum infections and episodes diagnosed outside of the study clinic, are included, and follow-up time is days from enrollment to date of last contact. †Per-protocol analysis excludes subjects who did not receive full course of treatment, and includes only malaria episodes subsequent to initial treatment caused by P. falciparum mono-infection and diagnosed at the study clinic. Follow-up time is days from enrollment to date of last contact, or receipt of off-study anti-malarial medication.