Table 3.
Incidence of malaria infection is presented yearly for the total population, Lihirians and migrants
| 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | p-value | ||
|---|---|---|---|---|---|---|---|---|
|
All - total population |
n = 7094 |
n = 7598 |
n = 8606 |
n = 10508 |
n = 10581 |
n = 10709 |
|
|
| Malaria infection |
Incidence |
601 |
494 |
505 |
570 |
542 |
437 |
< 0.001 |
| IRR |
|
0.82 |
1.02 |
1.13 |
0.95 |
0.81 |
||
|
Lihirians |
n = 3594 |
n = 3660 |
n = 3768 |
n = 3905 |
n = 3980 |
n = 4059 |
|
|
| Malaria infection |
Incidence |
723 |
568 |
587 |
740 |
548 |
430 |
< 0.001 |
| IRR |
|
0.79 |
1.03 |
1.26 |
0.74 |
0.79 |
||
|
Migrants |
n = 3500 |
n = 3938 |
n = 4838 |
n = 6603 |
n = 6601 |
n = 6650 |
|
|
| Malaria infection | Incidence |
476 |
425 |
441 |
469 |
538 |
442 |
< 0.001 |
| IRR | 0.89 | 1.04 | 1.06 | 1.15 | 0.82 | |||
Legend. Incidence was only calculated for the mine-impact area. Incidence is estimated as Minimum community-based incidence rates of all microscopically confirmed malaria infections. The Incidence Rate Ratio (IRR) compares the incidences of two consecutive years.