Table 1.
School and community WASH and environmental condition indicator components included in the analysis of factors associated with school-level soil-transmitted helminths and schistosome infection prevalence in Kenya
| Indicator | Component | Source |
|---|---|---|
| Infection prevalence | Baseline (year 1) infection prevalence (%) | Baseline survey9 |
| Year 5 infection prevalence (%) | Year 5 survey8 | |
| Prevalence relative reduction (%) | Year 5 survey8 | |
| Treatment data | Year 4 treatment coverage (%), summarized at the subcounty level | Evidence action |
| Number of treatment rounds with albendazole since year 1 | Evidence action and partner programs | |
| Number of treatment rounds with praziquantel since year 1 | Evidence action and partner programs | |
| Classification of the areas according to whether they were treated by National School Based Deworming or partner programs | Evidence action and partner programs | |
| Community-level WASH conditions | Household access to improved water source | Year 6 survey17 |
| Household access to any sanitation | Year 6 survey17 | |
| Household access to handwashing facility with soap and water | Year 6 survey17 | |
| School-level WASH conditions | Type of water source (i.e., improved vs. unimproved) | Year 5 and 6 surveys8,17 |
| Type of sanitation (i.e., improved vs. unimproved) | Year 5 and 6 surveys8,17 | |
| Availability of handwashing facility equipped with soap and water | Year 5 and 6 surveys8,17 | |
| School population | Year 5 and 6 surveys8,17 | |
| Pupil per latrine ratio (overall) | Year 5 and 6 surveys8,17 | |
| Availability of other programs (e.g., school feeding program and sanitation program) | Year 5 survey8 | |
| Latrine cleanliness and its structural integrity | Year 6 survey17 | |
| Environmental conditions | Land surface temperature (°C) (1 km resolution) | WorldClim23 |
| Aridity index (1 km resolution) | CGIAR Consortium for Spatial Information Figshare open data repository28 | |
| Enhanced vegetation index (1 km resolution) | Moderate Resolution Imaging Spectroradiometer vegetation indices26 | |
| Population density (population per 100 m2), (average projected population 2019) (100 m resolution) | WorldPop29 | |
| Mean monthly precipitation (1 km resolution) | WorldClim23 | |
| Elevation (30 m resolution) | RCMRD GeoPortal24 | |
| Slope (30 m resolution) | Calculated from the elevation values | |
| Land cover (1 km resolution) | RCMRD GeoPortal25 | |
| Soil type (250 m resolution) | International Soil Reference Information Centre world soil information27 |
RCMRD = Regional Center for Mapping of Resources for Development; WASH = water, sanitation, and hygiene.