Table 1.
Characteristics and results of study by age
| Study characteristic | Age (yrs) | |||||
|---|---|---|---|---|---|---|
| 5–6 | 7–8 | 9–10 | 11–12 | 13–14 | ||
| Number of participants | 64 | 85 | 85 | 79 | 83 | |
| Percentage female | 53.13 | 51.76 | 50.59 | 51.90 | 46.99 | |
| Schistosomiasis prevalence (%) | Kato-Katz | 76.56 | 80.00 | 87.06 | 82.28 | 84.34 |
| CCA | 85.94 | 91.76 | 98.82 | 97.47 | 97.59 | |
| Sm + mean intensity (epg) with ranges | 138.5 (24–744) | 394 (24–3480) | 528.9 (24–2616) | 434.7 (24–3840) | 732.3 (24–4104) | |
| Sm + mean intensity (epg) per village | Ampasimbola | 108 | 516 | 473.5 | 757.3 | 1095.3 |
| Ambohitelo | 256 | 160 | 387.4 | 460.4 | 495 | |
| Marofatsy | 96 | 664 | 192 | 693 | 656 | |
| Vohidamba | 72 | 223.2 | 402.7 | 929 | 604.4 | |
| Betampona | 144 | 487 | 691 | 384 | 366 | |
| Sm + mean intensity (epg) per gender | Male | 136 | 392.64 | 411.72 | 754.32 | 502.56 |
| Female | 147.6 | 362.64 | 498.32 | 850.08 | 732.8 | |
Abbreviations: CCA circulating cathodic antigen, epg eggs per gram, Kato-Katz microscopy using the Kato-Katz technique