Cardiology Weight Health Calculator

Cardiology Weight Health Calculator: Assess Your Risk :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –card-background: #ffffff; –shadow: 0 2px 5px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; padding-bottom: 50px; } .container { width: 100%; max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); box-sizing: border-box; } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 20px; } h1 { font-size: 2.2em; margin-bottom: 10px; } h2 { font-size: 1.8em; margin-top: 30px; margin-bottom: 15px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } h3 { font-size: 1.4em; margin-top: 25px; margin-bottom: 10px; color: var(–primary-color); } .calculator-section { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; } .input-group { display: flex; flex-direction: column; margin-bottom: 15px; } .input-group label { font-weight: bold; margin-bottom: 8px; color: var(–primary-color); } .input-group input[type="number"], .input-group select { padding: 12px; border: 1px solid var(–border-color); border-radius: 5px; font-size: 1em; box-sizing: border-box; width: 100%; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: var(–primary-color); outline: none; box-shadow: 0 0 5px rgba(0, 74, 153, 0.3); } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; } .error-message { color: red; font-size: 0.8em; margin-top: 5px; min-height: 1.2em; /* Prevent layout shift */ } .button-group { display: flex; gap: 10px; margin-top: 25px; flex-wrap: wrap; } button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; flex-grow: 1; /* Allow buttons to grow */ min-width: 150px; /* Minimum width for better appearance */ } .calculate-button { background-color: var(–primary-color); color: white; } .calculate-button:hover { background-color: #003366; } .reset-button { background-color: #6c757d; color: white; } .reset-button:hover { background-color: #5a6268; } .copy-button { background-color: #ffc107; color: #212529; } .copy-button:hover { background-color: #e0a800; } .results-container { margin-top: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–background-color); } .results-container h3 { margin-top: 0; text-align: left; color: var(–primary-color); } .primary-result { font-size: 2em; font-weight: bold; color: var(–primary-color); background-color: #e7f3ff; padding: 15px; border-radius: 5px; text-align: center; margin-bottom: 20px; border: 2px solid var(–primary-color); } .intermediate-results div, .results-container p { font-size: 1.1em; margin-bottom: 10px; } .intermediate-results span { font-weight: bold; color: var(–primary-color); min-width: 180px; display: inline-block; } .formula-explanation { font-size: 0.9em; color: #555; margin-top: 15px; padding-top: 10px; border-top: 1px dashed #ccc; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { padding: 10px 12px; border: 1px solid #ddd; text-align: left; } th { background-color: var(–primary-color); color: white; font-weight: bold; } tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } canvas { max-width: 100%; height: auto; margin-top: 20px; display: block; background-color: var(–card-background); border-radius: 5px; box-shadow: var(–shadow); } .article-content { width: 100%; max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); box-sizing: border-box; line-height: 1.7; font-size: 1.05em; } .article-content h2 { text-align: left; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; margin-top: 40px; } .article-content h3 { text-align: left; margin-top: 30px; color: #0056b3; } .article-content p { margin-bottom: 15px; } .article-content ul, .article-content ol { margin-left: 25px; margin-bottom: 15px; } .article-content li { margin-bottom: 8px; } .faq-item { margin-bottom: 15px; padding: 10px; border-left: 3px solid var(–primary-color); background-color: #eef7ff; border-radius: 3px; } .faq-item strong { color: var(–primary-color); } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 12px; } .related-links a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .related-links a:hover { text-decoration: underline; } .related-links span { display: block; font-size: 0.9em; color: #555; margin-top: 3px; } /* Responsive adjustments */ @media (max-width: 768px) { h1 { font-size: 1.8em; } h2 { font-size: 1.5em; } h3 { font-size: 1.2em; } .container, .calculator-section, .article-content { padding: 15px; margin: 15px auto; } button { width: 100%; min-width: unset; } .button-group { flex-direction: column; gap: 10px; } .primary-result { font-size: 1.7em; } .intermediate-results span { min-width: 100px; } }

Cardiology Weight Health Calculator

Assess your cardiovascular risk factors related to weight and other key health metrics.

Enter your current weight in kilograms (kg).
Enter your height in centimeters (cm).
Enter your waist circumference in centimeters (cm).
Enter your systolic blood pressure (top number) in mmHg.
Enter your diastolic blood pressure (bottom number) in mmHg.
Enter your LDL cholesterol level in mmol/L.
Enter your HDL cholesterol level in mmol/L.

Your Health Metrics

How we calculate your metrics:

BMI (Body Mass Index): Calculated as weight (kg) divided by the square of height (m). It categorizes weight status.

Waist-to-Height Ratio: Calculated as waist circumference (cm) divided by height (cm). A ratio above 0.5 indicates increased abdominal obesity risk.

Cardiovascular Risk Score (Simplified): This is a simplified score combining BMI, Waist-to-Height Ratio, Blood Pressure (Systolic & Diastolic), and Cholesterol (LDL/HDL ratio). Higher scores indicate greater risk. Exact clinical risk scores involve complex algorithms and more data points.

Health Metric Data
Metric Value Category/Interpretation
BMI
Waist-to-Height Ratio
Systolic BP
Diastolic BP
LDL Cholesterol
HDL Cholesterol
LDL/HDL Ratio

Risk Factors Overview

Chart comparing key risk indicators.

What is a Cardiology Weight Health Calculator?

A Cardiology Weight Health Calculator is an online tool designed to help individuals understand how their weight and related physiological metrics impact their cardiovascular health. It takes key inputs such as weight, height, waist circumference, blood pressure, and cholesterol levels to compute several health indicators. These indicators, like Body Mass Index (BMI), Waist-to-Height Ratio (WHtR), and a simplified cardiovascular risk score, provide a snapshot of potential risks associated with obesity and metabolic health. This cardiology weight health calculator empowers users with accessible information to discuss their health with healthcare professionals and make informed lifestyle decisions. Understanding these metrics is crucial for preventative cardiology and maintaining a healthy heart.

Who should use it? Anyone concerned about their weight and its effect on their heart health should consider using this tool. This includes individuals who are overweight or obese, those with a family history of heart disease, people experiencing changes in their body composition, or anyone simply looking for a proactive approach to cardiovascular wellness. It is particularly relevant for individuals trying to manage conditions like hypertension or high cholesterol, which are closely linked to body weight.

Common Misconceptions: A frequent misconception is that BMI alone is a definitive measure of health. While BMI is a useful screening tool, it doesn't distinguish between muscle and fat mass and doesn't account for fat distribution. Another is that only severely obese individuals are at risk; even moderate excess weight, particularly around the abdomen, can significantly elevate cardiovascular risk. Finally, some may believe these calculators replace a doctor's visit; they are supplementary tools, not diagnostic devices.

Cardiology Weight Health Calculator Formula and Mathematical Explanation

The Cardiology Weight Health Calculator employs several established formulas to assess cardiovascular risk factors related to body composition and metabolic health. Here's a breakdown:

Body Mass Index (BMI) Calculation

BMI is a widely used metric to estimate body fat based on height and weight. The formula is:

BMI = Weight (kg) / (Height (m))^2

To use this formula, height in centimeters must first be converted to meters (divide by 100).

Waist-to-Height Ratio (WHtR) Calculation

WHtR is considered a better indicator of abdominal obesity and associated cardiovascular risk than BMI alone. The formula is:

WHtR = Waist Circumference (cm) / Height (cm)

A WHtR of 0.5 or greater suggests an increased health risk.

LDL/HDL Cholesterol Ratio Calculation

This ratio provides insight into heart disease risk. A lower ratio is generally better.

LDL/HDL Ratio = LDL Cholesterol (mmol/L) / HDL Cholesterol (mmol/L)

Simplified Cardiovascular Risk Score

This calculator employs a simplified scoring system to give a general indication of risk. It assigns points based on deviations from healthy ranges for key metrics. The exact calculation involves summing weighted scores from:

  • BMI Category
  • Waist-to-Height Ratio Category
  • Blood Pressure (Systolic and Diastolic)
  • LDL/HDL Cholesterol Ratio

Note: Clinical risk assessment tools (like the Framingham Risk Score or ASCVD Risk Estimator) are more comprehensive and used by healthcare professionals. This calculator offers a basic estimation.

Variables Table

Here's a detailed look at the variables used:

Variables Used in the Cardiology Weight Health Calculator
Variable Meaning Unit Typical Healthy Range / Interpretation
Weight Body Mass Kilograms (kg) N/A (Used for BMI)
Height Body Length Centimeters (cm) N/A (Used for BMI & WHtR)
Waist Circumference Measurement around the abdomen at the narrowest point (or navel) Centimeters (cm) Men: < 94 cm (Ideal); < 102 cm (Increased Risk)
Women: < 80 cm (Ideal); < 88 cm (Increased Risk)
Systolic Blood Pressure Pressure when heart beats Millimeters of Mercury (mmHg) < 120 mmHg (Normal); 120-129 mmHg (Elevated); 130-139 mmHg (Hypertension Stage 1); ≥ 140 mmHg (Hypertension Stage 2)
Diastolic Blood Pressure Pressure when heart rests between beats Millimeters of Mercury (mmHg) < 80 mmHg (Normal); 80-89 mmHg (Hypertension Stage 1); ≥ 90 mmHg (Hypertension Stage 2)
LDL Cholesterol Low-Density Lipoprotein (often called "bad" cholesterol) Millimoles per Liter (mmol/L) < 2.6 mmol/L (Optimal); < 3.4 mmol/L (Near Optimal/High Average); 3.4-4.1 mmol/L (Borderline High); ≥ 4.1 mmol/L (High)
HDL Cholesterol High-Density Lipoprotein (often called "good" cholesterol) Millimoles per Liter (mmol/L) ≥ 1.0 mmol/L (Men); ≥ 1.3 mmol/L (Women) (Higher is generally better)
LDL/HDL Ratio Ratio of bad to good cholesterol Unitless < 3.0 (Ideal); 3.0-4.0 (Acceptable); > 4.0 (Increased Risk)
BMI Body Mass Index kg/m² < 18.5 (Underweight); 18.5-24.9 (Normal Weight); 25.0-29.9 (Overweight); ≥ 30.0 (Obese)
Waist-to-Height Ratio (WHtR) Waist circumference relative to height Unitless < 0.5 (Healthy); ≥ 0.5 (Increased Health Risk)

Practical Examples (Real-World Use Cases)

Let's illustrate how the Cardiology Weight Health Calculator works with practical examples:

Example 1: A Man Concerned About His Weight

Scenario: John is 45 years old, 180 cm tall, and weighs 95 kg. His waist circumference is 105 cm. His last check-up showed a systolic blood pressure of 135 mmHg, diastolic of 85 mmHg, LDL cholesterol of 4.2 mmol/L, and HDL cholesterol of 1.1 mmol/L.

Inputs:

  • Weight: 95 kg
  • Height: 180 cm
  • Waist Circumference: 105 cm
  • Systolic BP: 135 mmHg
  • Diastolic BP: 85 mmHg
  • LDL Cholesterol: 4.2 mmol/L
  • HDL Cholesterol: 1.1 mmol/L

Calculated Results:

  • BMI: 29.3 kg/m² (Overweight)
  • Waist-to-Height Ratio: 0.58 (Increased Risk)
  • LDL/HDL Ratio: 3.82 (Acceptable to Increased Risk)
  • Primary Result (Simplified Risk Score): Higher Risk
  • Intermediate Values: BMI = 29.3, WHtR = 0.58, LDL/HDL Ratio = 3.82

Interpretation: John's results indicate several areas of concern. His BMI places him in the overweight category. His waist circumference is significantly high for his height, suggesting increased abdominal fat and a higher risk for cardiovascular disease and type 2 diabetes. His blood pressure is in the Hypertension Stage 1 range, and his LDL cholesterol is borderline high, contributing to an elevated LDL/HDL ratio. This combination suggests a higher overall cardiovascular risk, prompting a discussion with his doctor about lifestyle changes, diet, exercise, and potentially medication.

Example 2: A Woman Managing Her Health

Scenario: Sarah is 55 years old, 165 cm tall, and weighs 65 kg. Her waist circumference is 78 cm. Her blood pressure is 118/75 mmHg, LDL cholesterol is 3.1 mmol/L, and HDL cholesterol is 1.6 mmol/L.

Inputs:

  • Weight: 65 kg
  • Height: 165 cm
  • Waist Circumference: 78 cm
  • Systolic BP: 118 mmHg
  • Diastolic BP: 75 mmHg
  • LDL Cholesterol: 3.1 mmol/L
  • HDL Cholesterol: 1.6 mmol/L

Calculated Results:

  • BMI: 23.9 kg/m² (Normal Weight)
  • Waist-to-Height Ratio: 0.47 (Healthy)
  • LDL/HDL Ratio: 1.94 (Ideal)
  • Primary Result (Simplified Risk Score): Lower Risk
  • Intermediate Values: BMI = 23.9, WHtR = 0.47, LDL/HDL Ratio = 1.94

Interpretation: Sarah's results are generally positive. Her BMI falls within the normal weight range. Her waist-to-height ratio indicates a healthy distribution of body fat, suggesting a lower risk associated with abdominal obesity. Her blood pressure is within the normal range, and her cholesterol levels are good, with an ideal LDL/HDL ratio. This suggests a lower overall cardiovascular risk, indicating her current weight management and lifestyle choices are likely beneficial for her heart health. Regular monitoring is still advised.

How to Use This Cardiology Weight Health Calculator

Using the Cardiology Weight Health Calculator is straightforward. Follow these steps:

  1. Gather Your Information: You will need accurate measurements for your current weight (in kilograms), height (in centimeters), waist circumference (in centimeters), systolic and diastolic blood pressure (in mmHg), and your most recent LDL and HDL cholesterol levels (in mmol/L). If you don't have these, consider visiting a healthcare provider or using reliable measuring tools.
  2. Input Your Data: Enter each piece of information into the corresponding field in the calculator. Ensure you use the correct units as specified. For example, if your height is 5 feet 9 inches, convert it to centimeters before entering.
  3. Calculate: Click the "Calculate Metrics" button. The calculator will instantly process your inputs.
  4. Review Your Results:
    • Primary Highlighted Result: This provides an overall assessment (e.g., "Lower Risk," "Moderate Risk," "Higher Risk").
    • Intermediate Values: You'll see your calculated BMI, Waist-to-Height Ratio, and LDL/HDL Ratio, along with their interpretations (e.g., "Normal Weight," "Increased Risk").
    • Data Table: A comprehensive table summarizes all inputs and calculated metrics with their categories.
    • Chart: A visual representation of key risk factors offers a quick overview.
  5. Understand the Formula: Read the "Formula Explanation" section to understand how each metric is derived and what it signifies.
  6. Use the Tools:
    • Reset Button: Use this to clear all fields and start fresh.
    • Copy Results Button: Click this to copy the displayed results and key assumptions to your clipboard, making it easy to share with your doctor or save for your records.

Decision-Making Guidance:

The results from this Cardiology Weight Health Calculator should be used as a starting point for conversations with a healthcare professional. If your results indicate an increased risk, it doesn't mean you will definitely develop heart disease, but it highlights areas where proactive steps can make a significant difference. These steps may include dietary adjustments, increasing physical activity, weight management strategies, stress reduction, and regular medical check-ups. Even if your results are within the healthy range, maintaining a healthy lifestyle is key for long-term cardiovascular well-being.

Key Factors That Affect Cardiology Weight Health Results

Several factors, beyond the direct inputs, influence the interpretation and accuracy of results from a Cardiology Weight Health Calculator and overall cardiovascular health:

  1. Age: Cardiovascular risk generally increases with age. The physiological changes associated with aging can affect blood pressure, cholesterol levels, and body composition, even if weight remains stable.
  2. Genetics and Family History: A family history of early heart disease (e.g., heart attack or stroke before age 55 in males or 65 in females) significantly increases an individual's predisposition to cardiovascular issues, regardless of current weight or lifestyle.
  3. Physical Activity Level: Regular exercise is crucial for maintaining a healthy weight, improving cholesterol profiles (raising HDL, lowering LDL), lowering blood pressure, and improving insulin sensitivity. Sedentary lifestyles directly counteract the benefits of weight management. This is why tools like the [Cardiovascular Exercise Benefits Calculator](http://example.com/cardio-exercise-benefits) can provide complementary insights.
  4. Dietary Habits: Beyond total weight, the quality of diet plays a massive role. High intake of saturated/trans fats, sodium, and added sugars negatively impacts blood pressure, cholesterol, and weight gain, particularly visceral fat. Conversely, a diet rich in fruits, vegetables, whole grains, and lean proteins supports heart health.
  5. Smoking Status: Smoking is a major independent risk factor for heart disease. It damages blood vessels, lowers HDL cholesterol, increases blood pressure, and makes blood more likely to clot, significantly exacerbating risks suggested by weight and metabolic factors.
  6. Stress Levels: Chronic stress can lead to hormonal changes that negatively impact blood pressure, appetite, and fat storage, particularly abdominal fat. Effective stress management is vital for cardiovascular health.
  7. Sleep Quality: Poor or insufficient sleep is linked to increased risks of obesity, hypertension, diabetes, and cardiovascular disease. Addressing sleep issues is an often-overlooked aspect of heart health management.
  8. Underlying Medical Conditions: Conditions like diabetes, metabolic syndrome, and thyroid disorders can significantly influence weight, blood pressure, and cholesterol levels, thus affecting overall cardiovascular risk.

Frequently Asked Questions (FAQ)

Q1: Is BMI the only factor that matters for heart health?
A1: No. While BMI is a useful screening tool for weight status, it's not the sole determinant of heart health. Waist circumference (indicating abdominal fat), blood pressure, cholesterol levels, genetics, and lifestyle factors are also critically important. Our Cardiology Weight Health Calculator considers multiple metrics for a more holistic view.
Q2: What is considered a "healthy" waist-to-height ratio?
A2: A general guideline is to keep your waist circumference less than half your height (a ratio below 0.5). For example, if you are 170 cm tall, your waist circumference should ideally be below 85 cm. Exceeding this threshold, especially for men, is associated with increased risk of heart disease and diabetes.
Q3: My doctor gave me a different risk score. Why is this calculator's result different?
A3: This calculator provides a simplified estimation based on common metrics. Clinical risk calculators used by doctors (like Framingham or ASCVD scores) incorporate more variables (age, gender, smoking status, medical history, etc.) and use more complex, validated algorithms. This tool is best used as an educational aid and starting point for discussion.
Q4: Can I use this calculator if I have a lot of muscle mass?
A4: If you have very high muscle mass (e.g., bodybuilders), your BMI might appear high ("overweight" or "obese") even if you have low body fat. In such cases, waist circumference and body fat percentage measurements are more relevant indicators of metabolic health. This calculator's BMI interpretation might be less accurate for extremely muscular individuals.
Q5: How often should I use this calculator?
A5: It's beneficial to use this calculator periodically, perhaps every 6-12 months, or whenever you notice significant changes in your weight, lifestyle, or health metrics. Consistent monitoring helps track progress and identify potential issues early. Consider using it in conjunction with regular [Health Check-up Schedules](http://example.com/health-checkup-schedules).
Q6: My LDL is high but HDL is also high. Is that okay?
A6: While a high HDL ("good" cholesterol) is beneficial, a high LDL ("bad" cholesterol) still poses a risk. The LDL/HDL ratio gives a better picture: a lower ratio (e.g., below 3.0) is ideal. Even with good HDL, elevated LDL necessitates attention and likely lifestyle changes or medical advice.
Q7: Does this calculator provide medical advice?
A7: No, this Cardiology Weight Health Calculator is for informational and educational purposes only. It does not provide medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Q8: What are some simple steps I can take if my results indicate higher risk?
A8: Start with gradual, sustainable changes. Focus on a balanced diet lower in processed foods, sodium, and unhealthy fats. Aim for at least 150 minutes of moderate-intensity aerobic exercise per week. Ensure adequate sleep and practice stress-management techniques. Consulting a doctor or a registered dietitian can provide personalized guidance. Explore resources on [Healthy Eating Tips](http://example.com/healthy-eating-tips).

© 2023 Your Cardiology Health Insights. All rights reserved.

function getInputValue(id) { var input = document.getElementById(id); if (!input) return NaN; var value = parseFloat(input.value); return isNaN(value) ? NaN : value; } function setErrorMessage(id, message) { var errorElement = document.getElementById(id); if (errorElement) { errorElement.textContent = message; } } function clearErrorMessages() { setErrorMessage('weightError', "); setErrorMessage('heightError', "); setErrorMessage('waistCircumferenceError', "); setErrorMessage('systolicError', "); setErrorMessage('diastolicError', "); setErrorMessage('ldlError', "); setErrorMessage('hdlError', "); } function validateInputs() { var weight = getInputValue('userWeight'); var height = getInputValue('userHeight'); var waist = getInputValue('userWaistCircumference'); var systolic = getInputValue('userBloodPressureSystolic'); var diastolic = getInputValue('userBloodPressureDiastolic'); var ldl = getInputValue('userCholesterolLDL'); var hdl = getInputValue('userCholesterolHDL'); var isValid = true; if (isNaN(weight) || weight <= 0) { setErrorMessage('weightError', 'Please enter a valid weight in kg.'); isValid = false; } if (isNaN(height) || height <= 0) { setErrorMessage('heightError', 'Please enter a valid height in cm.'); isValid = false; } if (isNaN(waist) || waist <= 0) { setErrorMessage('waistCircumferenceError', 'Please enter a valid waist circumference in cm.'); isValid = false; } if (isNaN(systolic) || systolic 300) { setErrorMessage('systolicError', 'Please enter a valid systolic BP (1-300 mmHg).'); isValid = false; } if (isNaN(diastolic) || diastolic 200) { setErrorMessage('diastolicError', 'Please enter a valid diastolic BP (1-200 mmHg).'); isValid = false; } if (isNaN(ldl) || ldl = 0 mmol/L).'); isValid = false; } if (isNaN(hdl) || hdl 0 mmol/L).'); isValid = false; } return isValid; } function calculateHealthMetrics() { clearErrorMessages(); if (!validateInputs()) { return; } var weight = getInputValue('userWeight'); // kg var height = getInputValue('userHeight'); // cm var waist = getInputValue('userWaistCircumference'); // cm var systolic = getInputValue('userBloodPressureSystolic'); // mmHg var diastolic = getInputValue('userBloodPressureDiastolic'); // mmHg var ldl = getInputValue('userCholesterolLDL'); // mmol/L var hdl = getInputValue('userCholesterolHDL'); // mmol/L // — Calculations — var heightInMeters = height / 100; var bmi = weight / (heightInMeters * heightInMeters); var bmiRounded = bmi.toFixed(1); var waistToHeightRatio = waist / height; var whtrRounded = waistToHeightRatio.toFixed(2); var ldlHdlRatio = (hdl > 0) ? ldl / hdl : NaN; var ldlHdlRatioRounded = isNaN(ldlHdlRatio) ? 'N/A' : ldlHdlRatio.toFixed(2); // Simplified Risk Scoring (Illustrative – not clinically validated) var riskScore = 0; var riskCategory = "Lower Risk"; // BMI Score if (bmiRounded = 18.5 && bmiRounded = 25 && bmiRounded = 30) riskScore += 4; // WHtR Score if (waistToHeightRatio = 0.45 && waistToHeightRatio = 0.5 && waistToHeightRatio = 0.55) riskScore += 4; // BP Score if (systolic < 120 && diastolic = 120 && systolic = 80 && diastolic = 130 && systolic = 90 && diastolic 89 is stage 2 else if (systolic >= 140 || diastolic >= 90) riskScore += 4; // LDL/HDL Ratio Score if (ldlHdlRatio = 2.5 && ldlHdlRatio = 3.5 && ldlHdlRatio = 4.5) riskScore += 4; // Determine overall risk category based on total score if (riskScore <= 3) riskCategory = "Lower Risk"; else if (riskScore <= 7) riskCategory = "Moderate Risk"; else if (riskScore <= 12) riskCategory = "Higher Risk"; else riskCategory = "Very High Risk"; // — Display Results — document.getElementById('primaryResult').textContent = riskCategory; document.getElementById('primaryResult').style.display = 'block'; document.getElementById('bmiResult').innerHTML = 'BMI: ' + bmiRounded + ' kg/m²'; document.getElementById('waistToHeightRatioResult').innerHTML = 'Waist-to-Height Ratio: ' + whtrRounded; document.getElementById('riskScoreResult').innerHTML = 'Simplified Risk Score: ' + riskScore; // — Update Table — document.getElementById('bmiTableValue').textContent = bmiRounded; document.getElementById('bmiTableCategory').textContent = getBmiCategory(bmi); document.getElementById('whtrTableValue').textContent = whtrRounded; document.getElementById('whtrTableCategory').textContent = getWhtrCategory(waistToHeightRatio); document.getElementById('systolicTableValue').textContent = systolic + ' mmHg'; document.getElementById('systolicTableCategory').textContent = getSystolicBpCategory(systolic); document.getElementById('diastolicTableValue').textContent = diastolic + ' mmHg'; document.getElementById('diastolicTableCategory').textContent = getDiastolicBpCategory(diastolic); document.getElementById('ldlTableValue').textContent = ldl + ' mmol/L'; document.getElementById('ldlTableCategory').textContent = getLdlCategory(ldl); document.getElementById('hdlTableValue').textContent = hdl + ' mmol/L'; document.getElementById('hdlTableCategory').textContent = getHdlCategory(hdl); document.getElementById('ldlHdlRatioTableValue').textContent = ldlHdlRatioRounded; document.getElementById('ldlHdlRatioTableCategory').textContent = getLdlHdlRatioCategory(ldlHdlRatio); // — Update Chart — updateRiskChart(bmi, waistToHeightRatio, systolic, diastolic, ldl, hdl, ldlHdlRatio); } // Helper functions for category descriptions function getBmiCategory(bmi) { if (bmi = 18.5 && bmi = 25 && bmi = 30) return 'Obese'; return 'N/A'; } function getWhtrCategory(whtr) { if (whtr = 0.45 && whtr = 0.5 && whtr = 0.55) return 'High Risk'; return 'N/A'; } function getSystolicBpCategory(bp) { if (bp = 120 && bp = 130 && bp = 140) return 'Hypertension Stage 2'; return 'N/A'; } function getDiastolicBpCategory(bp) { if (bp = 80 && bp = 90) return 'Hypertension Stage 2'; return 'N/A'; } function getLdlCategory(ldl) { if (isNaN(ldl)) return 'N/A'; if (ldl = 2.6 && ldl = 3.4 && ldl = 4.1) return 'High'; return 'N/A'; } function getHdlCategory(hdl) { if (isNaN(hdl) || hdl = 1.0 && hdl = 1.3) return 'High (Protective)'; // Generally good threshold return 'N/A'; } function getLdlHdlRatioCategory(ratio) { if (isNaN(ratio)) return 'N/A'; if (ratio = 2.5 && ratio = 3.5 && ratio = 4.5) return 'Increased Risk'; return 'N/A'; } // — Charting — var riskChart = null; var chartCanvas = document.getElementById('riskChart'); function updateRiskChart(bmi, whtr, systolic, diastolic, ldl, hdl, ldlHdlRatio) { if (riskChart) { riskChart.destroy(); // Destroy previous chart instance } var ctx = chartCanvas.getContext('2d'); // Normalize values for charting (e.g., map to a scale from 0-100) // This is a simplified normalization for visualization purposes. var normalizedBmi = Math.min(Math.max(bmi, 15) – 15, 20) / 15 * 100; // Scale BMI 25-40 within 0-100 var normalizedWhtr = Math.min(Math.max(whtr, 0.4) – 0.4, 0.3) / 0.3 * 100; // Scale WHtR 0.4-0.7 within 0-100 var normalizedSystolic = Math.min(Math.max(systolic, 110) – 110, 40) / 40 * 100; // Scale Systolic 110-150 within 0-100 var normalizedLdlHdlRatio = Math.min(Math.max(ldlHdlRatio, 2) – 2, 4) / 4 * 100; // Scale Ratio 2-6 within 0-100 // Ensure values are within bounds for charting var dataSeries1 = [ Math.max(0, Math.min(100, normalizedBmi)), Math.max(0, Math.min(100, normalizedWhtr)) ]; var dataSeries2 = [ Math.max(0, Math.min(100, normalizedSystolic)), Math.max(0, Math.min(100, normalizedLdlHdlRatio)) ]; riskChart = new Chart(ctx, { type: 'bar', // Use bar chart for comparison data: { labels: ['BMI', 'Waist-to-Height Ratio', 'Systolic BP', 'LDL/HDL Ratio'], datasets: [{ label: 'Weight & Body Composition Risk', data: [ Math.max(0, Math.min(100, normalizedBmi)), Math.max(0, Math.min(100, normalizedWhtr)), 0, // Placeholder for BP/Cholesterol series 0 // Placeholder for BP/Cholesterol series ], backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }, { label: 'Cardiovascular Metrics Risk', data: [ 0, // Placeholder for BMI/WHtR series 0, // Placeholder for BMI/WHtR series Math.max(0, Math.min(100, normalizedSystolic)), Math.max(0, Math.min(100, normalizedLdlHdlRatio)) ], backgroundColor: 'rgba(40, 167, 69, 0.6)', // Success color borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, max: 100, title: { display: true, text: 'Normalized Risk Level (0-100)' } }, x: { title: { display: true, text: 'Health Indicator' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Comparative Risk Visualization' } } } }); } // Initial chart render with dummy data or based on default values if present // Need to call calculateHealthMetrics once on load if default inputs are set. // For now, call updateRiskChart with default values when page loads. // Ensure chartCanvas exists before trying to get context if (chartCanvas) { updateRiskChart(22, 0.45, 120, 80, 3.0, 1.5, 2.0); // Default values } // — Reset Functionality — function resetForm() { document.getElementById('userWeight').value = '75'; document.getElementById('userHeight').value = '175'; document.getElementById('userWaistCircumference').value = '90'; document.getElementById('userBloodPressureSystolic').value = '120'; document.getElementById('userBloodPressureDiastolic').value = '80'; document.getElementById('userCholesterolLDL').value = '3.0'; document.getElementById('userCholesterolHDL').value = '1.5'; clearErrorMessages(); // Trigger calculation after reset to update results calculateHealthMetrics(); } // — Copy Results Functionality — function copyResults() { var primaryResult = document.getElementById('primaryResult').textContent; var bmiResult = document.getElementById('bmiResult').textContent; var whtrResult = document.getElementById('waistToHeightRatioResult').textContent; var riskScoreResult = document.getElementById('riskScoreResult').textContent; var table = document.getElementById('healthDataTable'); var tableRows = table.querySelectorAll('tbody tr'); var tableData = "Health Metric Data:\n"; tableRows.forEach(function(row) { var cells = row.querySelectorAll('td'); if (cells.length === 3) { tableData += `${cells[0].textContent} | ${cells[1].textContent} | ${cells[2].textContent}\n`; } }); var formulaSummary = "Formula Explanation:\n"; var formulaDiv = document.querySelector('.formula-explanation'); if (formulaDiv) { formulaDiv.querySelectorAll('p').forEach(function(p) { formulaSummary += p.textContent + "\n"; }); } var assumptions = `Key Assumptions:\n- BMI calculated using weight (kg) and height (m).\n- Waist-to-Height Ratio uses waist (cm) and height (cm).\n- Blood pressure in mmHg.\n- Cholesterol in mmol/L.\n- Simplified risk score is illustrative and not a clinical diagnosis.`; var resultsText = `— Cardiology Weight Health Calculator Results —\n\n`; resultsText += `Primary Result: ${primaryResult}\n\n`; resultsText += `Intermediate Values:\n${bmiResult}\n${whtrResult}\n${riskScoreResult}\n\n`; resultsText += `${tableData}\n`; resultsText += `${formulaSummary}\n`; resultsText += `${assumptions}`; // Use navigator.clipboard for modern browsers, fallback for older ones if (navigator.clipboard && window.isSecureContext) { navigator.clipboard.writeText(resultsText).then(function() { alert('Results copied to clipboard!'); }).catch(function(err) { console.error('Failed to copy text: ', err); fallbackCopyTextToClipboard(resultsText); }); } else { fallbackCopyTextToClipboard(resultsText); } } function fallbackCopyTextToClipboard(text) { var textArea = document.createElement("textarea"); textArea.value = text; textArea.style.position = "fixed"; // Avoid scrolling to bottom textArea.style.top = "0"; textArea.style.left = "0"; textArea.style.width = "2em"; textArea.style.height = "2em"; textArea.style.padding = "0"; textArea.style.border = "none"; textArea.style.outline = "none"; textArea.style.boxShadow = "none"; textArea.style.background = "transparent"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'successful' : 'unsuccessful'; if (successful) { alert('Results copied to clipboard!'); } else { alert('Failed to copy results. Please copy manually.'); } } catch (err) { console.error('Fallback: Oops, unable to copy', err); alert('Failed to copy results. Please copy manually.'); } document.body.removeChild(textArea); } // Add Chart.js library dynamically if not already present // In a real-world scenario, this would be included in the or via a build process. // For a single-file HTML, we might include it directly or load it. // For this single file output, we assume Chart.js is available or will be handled externally. // If it MUST be included, a script tag for Chart.js CDN would go in the head. // Example: // If Chart.js is not available, the updateRiskChart function will fail. // We are assuming it's available in the environment where this HTML is rendered. // For demonstration within a self-contained HTML: if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js'; script.onload = function() { console.log('Chart.js loaded.'); // Re-initialize chart if needed after load, or ensure calculateHealthMetrics calls updateRiskChart if (chartCanvas) { updateRiskChart(75, 0.53, 120, 80, 3.0, 1.5, 2.0); // Re-render with initial values after loading Chart.js } }; document.head.appendChild(script); } else { // If Chart.js is already available, ensure the chart is rendered on load if (chartCanvas) { updateRiskChart(75, 0.53, 120, 80, 3.0, 1.5, 2.0); // Default values for initial render } } // Initial calculation on page load to populate results based on default values document.addEventListener('DOMContentLoaded', function() { calculateHealthMetrics(); });

Leave a Comment