Table 2 Summary of sample characteristics by study year for all individuals examined (5–8 years-old, 9–12 years-old, and adults)
Cross-section | Variable | Baseline (2011) | Year 2 (2012) | Year 3 (2013) | Year 4 (2014) | Year 5 (2015) |
|---|---|---|---|---|---|---|
5−8 years | No. of individuals sampled | 20,220 |  |  |  | 22,364 |
Proportion female (%) | 9328 (46.1) | Â | Â | Â | 10,227 (45.8) | |
No. infected with S. haematobium (%) | 3474 (17.2) | Â | Â | Â | 2134 (9.54) | |
No. with heavy intensity of infection (%) | 391 (1.93) | Â | Â | Â | 239 (1.07) | |
Arithmetic mean egg counta | 1.08 | Â | Â | Â | 0.62 | |
9–12 years | No. of individuals sampled | 20,931 | 21,833 | 21,620 | 21,715 | 22,132 |
Proportion female (%) | 9438 (45.1) | 9697 (44.4) | 9771 (45.2) | 9943 (45.8) | 10,281 46.5) | |
No. infected with S. haematobium (%) | 3314 (15.8) | 2089 (9.57) | 3809 (17.6) | 1794 (8.26) | 2190 (9.89) | |
No. with heavy intensity of infection (%) | 276 (1.32) | 99 (0.45) | 292 (1.35) | 146 (0.67) | 146 (0.66) | |
Arithmetic mean egg counta | 3.05 | 1.27 | 3.27 | 1.42 | 1.45 | |
Adults (20–55 years) | No. of individuals sampled | 7041 |  |  |  | 9,955 |
Proportion female (%) | 3966 (56.3) | Â | Â | Â | 4789 (48.1) | |
No. infected with S. haematobium (%) | 793 (11.3) | Â | Â | Â | 493 (4.95) | |
No. with heavy intensity of infection (%) | 35 (0.50) | Â | Â | Â | 28 (0.28) | |
Arithmetic mean egg counta | 4.61 | Â | Â | Â | 2.05 |