Table 4.
Incidence of malaria infection stratified for age range
|
≤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) |
Legend The Incidence Rate Ratio (IRR) compares the incidence of a two consecutive age ranges.