From: Malaria epidemiology in Lihir Island, Papua New Guinea
≤4 yrs | 5-9 yrs | 10-14 yrs | 15-19 yrs | ≥20 yrs | p-value | ||
---|---|---|---|---|---|---|---|
n = 538 | n = 571 | n = 513 | n = 402 | n = 1789 | |||
Malaria infection | Incidence | 1,264 | 897 | 441 | 317 | 407 | < 0.001 |
IRR (95% CI) | 0.71 (0.47; 1.07) | 0.49 (0.47; 0.51) | 0.72 (0.67; 0.77) | 1.29 (1.21; 1.37) | |||
P. falciparum | Incidence | 754 | 622 | 332 | 242 | 308 | < 0.001 |
IRR (95% CI) | 0.83 (0.80; 0.85) | 0.53 (0.50; 0.56) | 0.73 (0.67; 0.79) | 1.27 (1.18; 1.37) | |||
P. vivax | Incidence | 514 | 262 | 96 | 64 | 88 | < 0.001 |
IRR (95% CI) | 0.51 (0.48; 0.55) | 0.37 (0.32; 0.41) | 0.67 (0.56; 0.81) | 1.37 (1.17; 1.62) |