Table 1 Characteristics of 507 primary school children
Characteristics | Number | Percentage/median (IQR) |
|---|---|---|
Age (years) | 507 | 8 (8–9) |
Female | 254 | 50.1 |
Type of water source | ||
 Lake or pond water | 304 | 60.0 |
 Tap water | 203 | 40.0 |
Contact with lake in the past 1 week | ||
 Yes | 427 | 84.2 |
 No | 80 | 15.8 |
Ethnicity | ||
 African | 506 | 99.8 |
 Asian | 1 | 0.2 |