olanmaaa/nigeria-immunisation-analysis

Exploratory analysis of synthetic routine immunisation data coverage across Kano, Lagos and Anambra states, 2022-2024 # Nigeria Routine Immunisation Coverage Analysis (2022-2024) This project examines routine immunisation coverage trends across three Nigerian states (Kano, Lagos, and Anambra), with a focus on identifying zero-dose children, urban-rural equity gaps, vaccine dropout patterns, and making actionable recommendations for targeted outreach by identifying facility types associated with better coverage outcomes. --- ## Data Disclaimer The dataset used in this project is **synthetic**. It was generated using Claude (Anthropic) to mimic realistic Nigerian immunisation data trends, informed by actual EPI programme structure, NPHCDA reporting conventions, and known state-level coverage patterns. It is intended solely for the purpose of demonstrating public health data analysis skills. --- ## Data Structure - 20,520 observations across 26 variables - Three states: Kano (North-West), Lagos (South-West), Anambra (South-East) - 10 LGAs per state (30 total), classified as urban or rural - 19 vaccine antigens across 6 age-based groups (birth doses through 15-month doses) - Monthly data spanning January 2022 to December 2024 - Key variables include: state, LGA, setting, facility type, vaccine, vaccine group, eligible children, children vaccinated, coverage rate, zero-dose children, zero-dose rate, and dropout rate (Penta1 to Penta3) --- ## Analysis Structure | Script | Description | |--------|-------------| | `01_data_cleaning.R` | Data loading, column renaming, type conversion, and validation | | `02_coverage_analysis.R` | Coverage summaries by state, setting, vaccine group, facility type, and target disease — includes Welch's ANOVA and Games-Howell post-hoc tests | | `03_lga_analysis.R` | LGA-level coverage variation and ranking within each state | | `04_zero_dose_analysis.R` | Zero-dose burden, dropout rates, and missed vaccination drivers by state and setting | | `05_trend_analysis.R` | Quarterly immunisation coverage trends across 2022-2024 | --- ## Tools - **R versio …