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Diabetes Risk Prediction Using Machine Learning and Explainable AI

Stephen Mwaura · Angela Masaki · Diana Byegon · Kevin Kisengu · Orandi Felix

Moringa School · Nairobi · 2026

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Methodology Pipeline

01

Data Understanding

BRFSS survey dataset — 14 clinical features, binary diabetes outcome.

02

EDA

Class distribution, feature correlations, outlier analysis.

03

Feature Engineering

Median imputation, StandardScaler, ordinal encoding.

04

Model Training

Six classifiers compared: LR, DT, RF, XGBoost, LightGBM, CatBoost.

05

Evaluation

Accuracy, F1, ROC-AUC, confusion matrix, 5-fold cross-validation.

06

Explainability

SHAP global importance + LIME patient-level explanations.

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