Network-based assessment of travel-time access, healthcare supply, underserved wards and strategic primary healthcare expansion across Kano State, Nigeria.
# Primary Healthcare Accessibility and Underservice in Kano State, Nigeria
## Overview
This project examines primary healthcare accessibility across Kano State, Nigeria. It combines population data, primary healthcare facility locations and road-network travel time with a 15-minute two-step floating catchment area (2SFCA) analysis.
The study asks two main questions:
1. Where are the main gaps in primary healthcare access across Kano State?
2. How much could carefully selected new PHC locations improve access?
The analysis covers **1,584 PHCs**, **484 wards** and **16,789 population-demand cells**.
---
## Why this matters
Being close to a health facility does not always mean that access is adequate. A nearby PHC may still serve a very large surrounding population.
This project therefore considers both:
- travel time to PHCs;
- the number of facilities available relative to surrounding population demand.
The result is a clearer picture of where PHC access is relatively strong and where communities may still face spatial underservice.
---
## Research question
**Where are the main gaps in primary healthcare access across Kano State, and how much could carefully selected new PHC locations improve access?**
---
## Method
The analysis followed these main steps:
1. Measured road-network travel time from population locations to the nearest PHC.
2. Calculated a 15-minute 2SFCA accessibility score.
3. Summarised accessibility at ward level.
4. Identified wards with multiple access problems.
5. Created a healthcare planning-priority classification.
6. Assessed **97 possible new PHC locations**.
7. Tested **+5, +10 and +20 PHC expansion scenarios**.
8. Repeated the accessibility analysis using three distance-decay approaches.
9. Reproduced the main expansion and candidate-site results during the final scientific review.
The main 2SFCA model uses **facility count as supply**.
---
## Key findings
The b …