> For the complete documentation index, see [llms.txt](https://health-catchment-areas-working-g.gitbook.io/health-catchment-areas/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://health-catchment-areas-working-g.gitbook.io/health-catchment-areas/master.md).

# Table of Figures

Figure 1: Representation of a health area with 2 sub-health zones and their respective health facilities and catchment areas (Source: MSF) 

Figure 2: Conceptual framework of Health Catchment Area Working Group (Source: MSF) 

Figure 3: Health boundary demarcation using the bottom-up approach (Adapted from HOT and OSM DRC Community Project) 

Figure 4: Health boundary pyramidal structure showcasing the Top-to-Bottom approach (Adapted from National Health Statistics, MoH, CHAD). 

Figure 5: Classification of Health Facilities (Source: Falchetta et al. 16 ) 

Figure 6: Algorithm for the creation of health catchment area geospatial databases 

Figure 7: Hierarchies in the classification of Health Catchment Areas