Datasets:

electricsheepafrica
/

nigeria-hospitals-accessibility

language:
  - en
license: odbl
tags:
  - geospatial
  - nigeria
  - hospitals
  - infrastructure
pretty_name: Nigeria Hospitals Accessibility Indicators
size_categories:
  - 10K<n<100K

Nigeria Hospitals Accessibility Indicators

This dataset provides insights into spatial accessibility to hospital services across Nigeria. It uses travel-time isochrones to calculate the population within time intervals from 10 to 120 minutes away.

Data Structure

name: Region or country name.
iso: ISO3 country code.
id: Unique identifier for the administrative unit.
country: ISO3 country code.
admin_level: Administrative level of the unit (ADM1-ADM4).
category: hospitals.
range_type: time.
range: Time away (in seconds) from hospitals used to generate the polygon.
population: Total population within the specified range.
population_share: Cumulative percentage of total population.
population_interval: Incremental population added in the current time band.
population_interval_share: Share of the total population represented by the current interval.

Files

NGA_hospitals_access_long.parquet: Detailed interval data.
NGA_hospitals_access_wide.parquet: Aggregated data per administrative unit.
NGA_hospitals_access.gpkg: Geospatial polygons for the accessibility zones.

Methodology

Accessibility is assessed using travel-time isochrones overlayed with WorldPop population data (100m resolution).

Limitations

OSM Completeness: Relies on OSM data; quality varies by region.
Population Estimates: Based on statistical models (WorldPop top-down estimates), not direct census counts.
Travel Time Assumptions: Models do not account for real-time traffic, seasonal weather (e.g., flooding), or road degradation.
Boundary Precision: Boundaries from geoBoundaries may differ from official government demarcations.

Source

Created using openrouteservice and OpenStreetMap data. HeiGIT (Heidelberg Institute for Geoinformation Technology). Open Healthcare Access Map