| | --- |
| | task_categories: |
| | - tabular-classification |
| | language: |
| | - en |
| | tags: |
| | - health |
| | - medical |
| | size_categories: |
| | - 1K<n<10K |
| | --- |
| | # ❤️ Heart Disease — Exploratory Data Analysis |
| |
|
| | ## 👤 Author |
| | **Oded Fuchs** |
| |
|
| | --- |
| |
|
| | ## 🎯 Project Goal |
| | The goal of this project is to explore which factors are most strongly related to heart disease, |
| | using statistical analysis and data visualization. |
| |
|
| | --- |
| |
|
| | ## 🔍 Research Question |
| | > **Which factors have the strongest impact on the likelihood of heart disease?** |
| |
|
| | --- |
| |
|
| | ## 📦 Dataset |
| | - Source: Kaggle |
| | - Format: CSV |
| | - ~302 samples |
| | - Contains various clinical features |
| |
|
| | ### Target |
| | `target` |
| | - **1 = Heart disease** |
| | - **0 = No heart disease** |
| |
|
| | --- |
| |
|
| | ## 🏷 Feature Overview |
| | | Feature | Description | |
| | |---------|-------------| |
| | | age | Age | |
| | | sex | 0 = female, 1 = male | |
| | | cp | Chest pain type | |
| | | trestbps | Resting blood pressure | |
| | | chol | Cholesterol | |
| | | fbs | Fasting blood sugar | |
| | | restecg | Resting ECG results | |
| | | thalach | Maximum heart rate | |
| | | exang | Exercise-induced angina | |
| | | oldpeak | ST depression | |
| | | slope | Slope of ST | |
| | | ca | Number of major vessels | |
| | | thal | Thallium test result | |
| | | target | Heart disease indicator | |
| |
|
| | --- |
| |
|
| | # 🔧 Data Preparation |
| |
|
| | ### ✅ Cleaning Steps |
| | - Checked for missing values — none found |
| | - Checked for duplicate records |
| | - Verified valid ranges |
| | - Adjusted and simplified column names |
| |
|
| | --- |
| |
|
| | # 📊 Exploratory Data Analysis (EDA) |
| |
|
| | ## Target Distribution |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ## ✅ Key Features & Insights |
| |
|
| | ### 1) Age |
| | Patients with heart disease are slightly younger on average. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ### 2) Chest Pain (cp) |
| | One of the strongest predictors: |
| | Higher chest pain type is strongly linked to heart disease. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ### 3) Max Heart Rate (thalach) |
| | Patients with heart disease tend to have a higher maximum heart rate. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ### 4) ST Depression (oldpeak) |
| | Lower oldpeak values are more common among heart-disease patients. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ### 5) Exercise-Induced Angina (exang) |
| | Most patients **do not** experience chest pain during exercise. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | ### 6) Thal |
| | Moderate difference between groups, still noticeable. |
| |
|
| |  |
| |
|
| | --- |
| |
|
| | # 📑 Summary Table |
| |
|
| | | Feature | No Disease (0) | Disease (1) | Insight | |
| | |---------|----------------|-------------|---------| |
| | | cp | 0.48 | 1.38 | Strong relationship | |
| | | thalach | 139 | 159 | Higher among disease | |
| | | oldpeak | 1.60 | 0.57 | Lower among disease | |
| | | exang | 0.55 | 0.14 | Less common in disease | |
| | | age | 56.6 | 52.4 | Slightly younger | |
| | | chol | 251 | 241 | Small difference | |
| | | ca | 1.16 | 0.37 | ⚠️ Opposite trend | |
| | | trestbps | 134 | 129 | Weak effect | |
| | | thal | 2.54 | 2.12 | Moderate effect | |
| |
|
| | --- |
| |
|
| | # ✅ Main Insights |
| |
|
| | 📌 Strong indicators of heart disease: |
| | 1) **Chest Pain (cp)** |
| | 2) **Max Heart Rate (thalach)** |
| | 3) **ST Depression (oldpeak)** |
| | 4) **Exercise-Induced Angina (exang)** |
| |
|
| | 📌 Additional observations: |
| | - Exercise-induced angina (exang) is less common among patients with heart disease |
| | - Cholesterol and blood pressure show weaker relationships |
| | - `ca` shows an unexpected pattern → may indicate data/coding issues |
| |
|
| | --- |
| |
|
| | # ✅ Conclusions |
| | Several clinical measurements appear strongly connected to heart disease, including chest pain type, maximum heart rate, and ST-related metrics. |
| | Other features, such as cholesterol and resting blood pressure, show weaker influence. |
| |
|
| | --- |
| |
|
| | # 🎬 Video Presentation |
| | > 🔗 https://www.loom.com/share/d5891c3d0c20490ba79884fc701f4bc7 |
| |
|
| | --- |
| | |
| | # 🧾 Files Included |
| | | File | Description | |
| | |------|-------------| |
| | | Assignment_1_oded_fuchs.ipynb | Analysis & visuals | |
| | | README.md | Project summary | |
| | | heart.csv | Original dataset | |
| | |
| | --- |
| | |
