Table 4.
Malaria prevalence and other malariometric indices by survey
| February–March 2003 | February–March 2004 | October–November 2004 | |
|---|---|---|---|
| N (% children cohort) | 500 (90.4) | 381 (80.6) | 338 (85.4) |
| P. falciparum infection (%) | 203 (40.6) | 155 (40.7) | 233 (68.9) |
| P. falciparum clinical malaria (%) | 111 (22.2) | 35 (9.2) | 48 (14.2) |
| Mean (geometric) P. falciparum density (IQR) | 276 (210–364) | 174 (117–260) | 88 (67–118) |
| Gametocyte carriers (%) | 52 (10.4) | 33 (8.7) | 28 (8.5) |
| Mean PCV (IQR) | 37.4 (37.0–37.7) | 37.2 (36.8–37.6) | 36.6 (36.2–37.0) |
| Enlarged spleen (%) | 230/475 (48.4) | 138/353 (39.1) | 141/283 (49.8) |
| Hackett Class 1 (%) | 32 (13.9) | 25 (18.1) | 20 (14.2) |
| Hackett Class > 1 (%) | 198 (86.1) | 113 (81.9) | 121 (85.8) |
N = total number of children in the cohort at the time of survey; IQR = interquartile range; PCV = packed cell volume.