Figure 4. Association between parasite density of asymptomatic malaria infections and the short-term, 1-month hazard of symptomatic malaria.

Estimates of the 1-month hazard of symptomatic malaria in people with asymptomatic infections compared to being uninfected are presented in separate frailty Cox proportional hazards models that were each restricted to asymptomatic infections meeting parasite density thresholds. Each model compared people with asymptomatic malaria infections meeting the listed density threshold to uninfected people and controlled for covariates participant age, sex, bed net usage, and village.

Figure 4—figure supplement 1. Association between parasite density of asymptomatic malaria infections and the 1-month hazard of symptomatic malaria stratified by participant age.

Each model compared people with asymptomatic malaria infections meeting the listed density threshold to uninfected people and controlled for covariates participant sex, bed net usage, and village. The >500 p/μL and >1000 p/μL thresholds are not presented due to sparse data.