Table 1. Participant Characteristics.
| EA | EF | NF | P value | |
|---|---|---|---|---|
| Number | 5 | 3 | 5 | |
| % Female | 40 | 66.7 | 100 | NSa |
| Mean age in years (range) | 19.7 (15.3–23.3) | 16.0 (13.5–18.3) | 20.6 (19.0–22.0) | NSb |
| Mean hemoglobin (g/dL) at uninfected baseline (range) | 14.1 (12.1–17.6) | 13.2 (12.6–13.6) | 13.1 (12.4–14.3) | NSb |
| Mean temperature (°C) at first infection (range) | 36.5 (36.1–37.2) | 38.5 (37.7–39.4) | 38.5 (37.7–39.4) | NA |
| Mean parasite density (parasites/μl) at first infection (range) | 5100 (1000–8100) | 22,000 (14,000–31,000) | 57 (4.1–100) | 0.0051b |
Abbreviations: EA, malaria-experienced, asymptomatic at first infection; NF, naïve, asymptomatic at first infection; EF, malaria-experienced, febrile at first infection; NS, not significant; NA, not applicable. aFisher’s exact test. bKruskal-Wallis test.