Characteristics of children in control and intervention schools at baseline: November 2010 (classes 1–6)
| Control schools | Intervention schools | |
| Number of schools surveyed | 19 | 19 |
| Number of children surveyed | 954 | 937 |
| School-level characteristics: | ||
| School size: mean no. of pupils (SD) | 205.1 (5.8) | 185.4 (4.2) |
| Mean prevalence of malaria (range) | 78.4% (54.0–94.1%) | 80.3% (52.0–92.0%) |
| Individual-level characteristics: | ||
| Mean age in years | 9.4 (2.3) | 9.5 (2.2) |
| Proportion Female | 48.2% (460/954) | 48.7% (456/937) |
| Nutritional status: height-for-age z-score | −0.85 (1.23) | −0.83 (1.48) |
| Nutritional status: BMI-for-age z-score | −0.68 (0.93) | −0.61 (0.97) |
| Father is literate* | 51.9% (374/721) | 53.9% (386/716) |
| Mother is literate* | 20.1% (145/721) | 18.5% (133/720) |
| Household has a moped* | 76.4% (539/706) | 83.9% (600/715) |
| Household has a telephone* | 75.1% (527/702) | 78.8% (564/716) |
| Child slept under a net night before survey* | 41.4% (296/715) | 41.9% (299/713) |
| Study endpoints at baseline: biomedical | ||
| Prevalence of anaemia | 62.6% (580/927) | 63.2% (562/889) |
| Mean haemoglobin concentration, g/L | 110.2 (13.1) | 110.4 (13.5) |
| Plasmodium infection:† | ||
| Prevalence of malaria parasites: all species | 78.8% (685/869) | 80.7% (725/899) |
| Parasite density per µL blood, all species in slide-positive children: geometric mean | 693.8 (99.5) | 492.0 (121.5) |
| Prevalence of gametocytes: all species | 5.9% (51/869) | 4.8% (43/899) |
Data are mean (SD), or % (n/N), unless specified otherwise.
*Data based on child report by schoolchildren surveyed in classes 3–6; questions were not asked of younger children in classes 1 and 2.
†For three schools, many blood slides were inadvertently destroyed (two controls and one intervention), resulting in missing data for Plasmodium infection.
BMI, body mass index.