The specific objectives were to:
- Assess the current status of outcome indicators and set realistic targets
- Understand current context to inform programme implementation
- Validate strategic direction and inform investment
- Strengthen monitoring and evaluation systems
- Enhance technical programme staff competency on conducting baseline surveys
The household and youth surveys used a two-stage stratified, cluster sampling design with probability proportional to size used to sample the clusters or villages while the segmentation method was used to select individuals or households. World Vision districts were the strata.
The survey covered the following districts: Angonia, Guija, Mabalane, Mocuba, Monapo, Nacaroa, Morrumbala, Murrupula. Some districts were combined for the survey to match programme administration areas for a total of 6 World Vision districts. Each district had 39 clusters, and an average of 833 households and 574 adolescents selected for interviews in each cluster.
Figures: Google map showing the cluster boundary and selected households
In this specific scenario, cost and time were significantly lower than the alternative. The alternative would have been a full household listing across several districts to create the sampling frame. Instead, we were able to spend a couple days familiarising ourselves with R and GridSample, working through some errors/bugs and then creating the field maps. This did take 1-1.5 weeks but was only 1-2 people rather than a full survey team and had some lag time waiting for programme to run.
The final maps were very easy to view digitally in detail and print large-scale for field teams. Satellite images were very clear and accurate making it easy to use “natural” boundaries such as rivers and roads to guide household sampling where street names and addresses were absent.