Table 1.
Basic demographic characteristics of the study population
| Total recruited participants | 1182 |
|---|---|
| Age in year (median, IQR) | 30 (18–45) |
| Sex (M:F) | 4:5 |
| History of malaria (n, %) | 549 (46.4) |
| History of malaria within 1 year (n, %) | 71 (6.0) |
| History of malaria within 1–3 years (n, %) | 215 (18.2) |
| History of malaria more than 3 years (n, %) | 263 (22.2) |
| Visit 1 (V1) collection (n = 1182, 100.0%) | |
| All asymptomatic casesa | 30 (2.5%) |
| P. vivax | 24 |
| P. falciparum | 4 |
| P. malariae | 2 |
| Visit 2 (V2) collection (n = 894, 75.6%) | |
| Asymptomatic cases | 6 (0.7%) |
| P. vivax | 6 (0.7%) |
| Visit 3 (V3) collection (n = 944, 79.9%) | |
| Asymptomatic cases | 13 (2.5%) |
| P. vivax | 13 (2.5%) |
| Visit 4 (V4) collection (n = 889, 75.2%) | |
| Asymptomatic cases | 8 (0.9%) |
| P. vivax | 8 (0.9%) |
aAsymptomatic cases were detected by nested PCR