document.addEventListener(‘DOMContentLoaded’, function() { // Unit toggles document.querySelectorAll(‘.unit-toggle button’).forEach(button => { button.addEventListener(‘click’, function() { const parent = this.parentElement; const input = parent.previousElementSibling; const hiddenInput = parent.nextElementSibling; // Toggle active class parent.querySelectorAll(‘button’).forEach(btn => btn.classList.remove(‘active’)); this.classList.add(‘active’); hiddenInput.value = this.dataset.unit; // Convert values if needed if (input.id === ‘height’) { if (hiddenInput.value === ‘cm’ && this.dataset.unit === ‘ft’) { // Convert cm to ft/in const cm = parseFloat(input.value); if (!isNaN(cm)) { const totalInches = cm / 2.54; const feet = Math.floor(totalInches / 12); const inches = Math.round(totalInches % 12); input.value = `${feet}’ ${inches}”`; } } else if (hiddenInput.value === ‘ft’ && this.dataset.unit === ‘cm’) { // Convert ft/in to cm const ftIn = input.value.match(/(\d+)’\s*(\d+)”/); if (ftIn) { const feet = parseFloat(ftIn[1]); const inches = parseFloat(ftIn[2]); const cm = (feet * 12 + inches) * 2.54; input.value = cm.toFixed(1); } } } else if (input.id === ‘weight’) { if (hiddenInput.value === ‘kg’ && this.dataset.unit === ‘lbs’) { // Convert kg to lbs const kg = parseFloat(input.value); if (!isNaN(kg)) { input.value = (kg * 2.20462).toFixed(1); } } else if (hiddenInput.value === ‘lbs’ && this.dataset.unit === ‘kg’) { // Convert lbs to kg const lbs = parseFloat(input.value); if (!isNaN(lbs)) { input.value = (lbs / 2.20462).toFixed(1); } } } // Update BMI calculateBMI(); }); }); // BMI calculation function calculateBMI() { const heightInput = document.getElementById(‘height’); const weightInput = document.getElementById(‘weight’); const heightUnit = document.getElementById(‘heightUnit’).value; const weightUnit = document.getElementById(‘weightUnit’).value; const bmiInput = document.getElementById(‘bmi’); let height = parseFloat(heightInput.value); let weight = parseFloat(weightInput.value); if (isNaN(height) || isNaN(weight)) return; // Convert to metric if needed if (heightUnit === ‘ft’) { const ftIn = heightInput.value.match(/(\d+)’\s*(\d+)”/); if (ftIn) { const feet = parseFloat(ftIn[1]); const inches = parseFloat(ftIn[2]); height = (feet * 12 + inches) * 2.54; // to cm } else { return; } } if (weightUnit === ‘lbs’) { weight = weight / 2.20462; // to kg } // Calculate BMI (kg/m^2) const heightM = height / 100; const bmi = weight / (heightM * heightM); bmiInput.value = bmi.toFixed(1); } document.getElementById(‘height’).addEventListener(‘input’, calculateBMI); document.getElementById(‘weight’).addEventListener(‘input’, calculateBMI); // Cancer type specific sections document.getElementById(‘cancerType’).addEventListener(‘change’, function() { // Hide all cancer type sections document.querySelectorAll(‘.cancer-type-section’).forEach(section => { section.style.display = ‘none’; }); // Show specific section if selected if (this.value === ‘breast’) { document.getElementById(‘breastCancerSection’).style.display = ‘block’; } }); // Pain level slider const painSlider = document.getElementById(‘painLevel’); const painValue = document.getElementById(‘painValue’); painSlider.addEventListener(‘input’, function() { painValue.textContent = this.value; }); // Calculate button document.getElementById(‘calculateBtn’).addEventListener(‘click’, function() { if (!validateForm()) return; const survivalRate = calculateSurvivalRate(); displayResults(survivalRate); }); // Form validation function validateForm() { const age = document.getElementById(‘age’); const cancerType = document.getElementById(‘cancerType’); const cancerStage = document.getElementById(‘cancerStage’); if (!age.value || age.value 120) { alert(‘Please enter a valid age between 1 and 120’); age.focus(); return false; } if (!cancerType.value) { alert(‘Please select a cancer type’); cancerType.focus(); return false; } if (!cancerStage.value) { alert(‘Please select a cancer stage’); cancerStage.focus(); return false; } return true; } // Survival rate calculation function calculateSurvivalRate() { const age = parseInt(document.getElementById(‘age’).value); const cancerType = document.getElementById(‘cancerType’).value; const cancerStage = document.getElementById(‘cancerStage’).value; const tumorGrade = document.getElementById(‘tumorGrade’).value; const performanceStatus = document.getElementById(‘performanceStatus’).value; const treatments = document.querySelectorAll(‘input[name=”treatment”]:checked’).length; // Base rates by cancer type and stage (simplified for this example) // These are fictional rates for demonstration purposes const baseRates = { ‘breast’: [99, 90, 85, 70, 30], ‘lung’: [90, 60, 35, 15, 5], ‘prostate’: [100, 99, 95, 80, 30], ‘colorectal’: [95, 80, 65, 40, 15], ‘bladder’: [95, 75, 55, 35, 10], ‘melanoma’: [98, 85, 60, 30, 20], ‘non-hodgkin’: [95, 80, 70, 60, 50], ‘kidney’: [90, 75, 55, 30, 10], ‘leukemia’: [95, 85, 70, 50, 30], ‘pancreatic’: [50, 30, 15, 8, 3], ‘thyroid’: [100, 99, 95, 80, 50], ‘liver’: [60, 40, 25, 10, 3], ‘other’: [80, 65, 50, 30, 10] }; // Get base rate based on cancer type and stage let rate = cancerStage === ‘unknown’ ? 50 : baseRates[cancerType][parseInt(cancerStage)]; // Adjustments based on other factors // Age adjustment if (age 70) rate *= 0.9; // Tumor grade adjustment if (tumorGrade === ‘3’) rate *= 0.9; else if (tumorGrade === ‘4’) rate *= 0.8; // Performance status adjustment rate *= 1 – (parseInt(performanceStatus) * 0.05); // Treatment adjustment (each treatment improves prognosis) rate *= 1 + (treatments * 0.05); // Ensure rate is within bounds rate = Math.max(1, Math.min(99, rate)); return Math.round(rate); } // Display results function displayResults(rate) { const resultsContainer = document.getElementById(‘resultsContainer’); const survivalRateElement = document.getElementById(‘survivalRate’); const progressFill = document.getElementById(‘progressFill’); const progressPercent = document.getElementById(‘progressPercent’); const interpretationText = document.getElementById(‘interpretationText’); const specificInterpretation = document.getElementById(‘specificInterpretation’); // Show results container resultsContainer.style.display = ‘block’; // Set survival rate survivalRateElement.textContent = `${rate}%`; // Animate progress bar let current = 0; const interval = setInterval(() => { current += 1; progressFill.style.width = `${current}%`; progressPercent.textContent = `${current}%`; // Change color based on value if (current < 30) { progressFill.style.backgroundColor = 'var(–danger)'; } else if (current = rate) { clearInterval(interval); } }, 20); // Set interpretation let interpretation = ”; let specificInfo = ”; const cancerType = document.getElementById(‘cancerType’).value; const cancerStage = document.getElementById(‘cancerStage’).value; if (rate >= 80) { interpretation = `Your estimated ${rate}% survival rate suggests a favorable prognosis. `; } else if (rate >= 50) { interpretation = `Your estimated ${rate}% survival rate suggests an intermediate prognosis. `; } else { interpretation = `Your estimated ${rate}% survival rate suggests a guarded prognosis. `; } interpretation += “Remember that these are statistical estimates and individual outcomes may vary. Many factors influence cancer survival, including response to treatment, genetic factors, and overall health.”; // Add cancer-specific information switch(cancerType) { case ‘breast’: specificInfo = `

For breast cancer, early detection and treatment significantly improve outcomes. The 5-year survival rate for localized breast cancer is about 99%. Hormone receptor status and HER2 status also impact prognosis.

`; break; case ‘lung’: specificInfo = `

For lung cancer, survival rates vary widely by stage and type (NSCLC vs SCLC). Early detection is challenging but improves outcomes. Smoking cessation is always beneficial.

`; break; case ‘colorectal’: specificInfo = `

For colorectal cancer, regular screening can detect precancerous polyps. Survival rates are higher for cancers found before they spread.

`; break; case ‘prostate’: specificInfo = `

For prostate cancer, most cases grow slowly. Even in advanced stages, many men live for years with treatment. Age and overall health are important factors.

`; break; default: specificInfo = `

For ${document.getElementById(‘cancerType’).options[document.getElementById(‘cancerType’).selectedIndex].text}, survival rates depend on many factors including stage at diagnosis, tumor characteristics, and response to treatment.

`; } // Add stage-specific information if (cancerStage !== ‘unknown’) { specificInfo += `

Stage ${parseInt(cancerStage)+1} cancer typically has ${getStageDescription(parseInt(cancerStage))}.

`; } interpretationText.textContent = interpretation; specificInterpretation.innerHTML = specificInfo; // Scroll to results resultsContainer.scrollIntoView({ behavior: ‘smooth’ }); // Setup social sharing setupSocialSharing(rate); } function getStageDescription(stage) { const descriptions = [ “an excellent prognosis as it’s confined to the original site”, “a good prognosis with localized spread”, “an intermediate prognosis with regional spread”, “a guarded prognosis with more extensive regional spread”, “the most serious prognosis with distant metastasis” ]; return descriptions[stage]; } // Social sharing setup function setupSocialSharing(rate) { const cancerType = document.getElementById(‘cancerType’).options[document.getElementById(‘cancerType’).selectedIndex].text; const shareText = `My estimated ${rate}% survival rate for ${cancerType} according to the Cancer Survival Rate Estimator.`; const shareUrl = window.location.href; document.getElementById(‘facebookShare’).addEventListener(‘click’, function(e) { e.preventDefault(); window.open(`https://www.facebook.com/sharer/sharer.php?u=${encodeURIComponent(shareUrl)}&quote=${encodeURIComponent(shareText)}`, ‘facebook-share-dialog’, ‘width=800,height=600’); }); document.getElementById(‘twitterShare’).addEventListener(‘click’, function(e) { e.preventDefault(); window.open(`https://twitter.com/intent/tweet?text=${encodeURIComponent(shareText)}&url=${encodeURIComponent(shareUrl)}`, ‘twitter-share-dialog’, ‘width=800,height=600’); }); document.getElementById(‘linkedinShare’).addEventListener(‘click’, function(e) { e.preventDefault(); window.open(`https://www.linkedin.com/shareArticle?mini=true&url=${encodeURIComponent(shareUrl)}&title=Cancer%20Survival%20Rate%20Estimate&summary=${encodeURIComponent(shareText)}`, ‘linkedin-share-dialog’, ‘width=800,height=600’); }); document.getElementById(‘whatsappShare’).addEventListener(‘click’, function(e) { e.preventDefault(); window.open(`https://wa.me/?text=${encodeURIComponent(shareText + ‘ ‘ + shareUrl)}`, ‘whatsapp-share-dialog’, ‘width=800,height=600’); }); } });

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Cancer Survival Rate Estimator

What are Cancer Survival Rates?

Cancer Survival Rate Estimators are statistical estimates that indicate the percentage of people with a specific type and stage of cancer who survive for a certain period (usually 5 years) after diagnosis. These rates help patients and doctors understand prognosis, guide treatment decisions, and provide realistic expectations.

Our Free Cancer Survival Rate Estimator helps your prognosis based on key clinical factors such as cancer type, stage, tumor grade, treatment response, and overall health. Below, we explain the essential terms, how survival rates work, and what your results mean.

Key Terms in Cancer Survival Rate Estimator Analysis

1. Cancer Survival Rate Estimator

The percentage of people who survive a specific cancer for a defined period (e.g., 5-year survival rate).

2. Cancer Staging (TNM System)

• Stage 0 (Carcinoma in situ): Abnormal cells present but not invasive.
• Stage I-II (Localized): Cancer confined to the primary site.
• Stage III (Regional Spread): Cancer has spread to nearby lymph nodes.
• Stage IV (Metastatic): Cancer has spread to distant organs.

3. Tumor Grade

• Grade 1 (Low Grade): Slow-growing, less aggressive.
• Grade 2-3 (Intermediate/High Grade): Faster-growing, more aggressive.

4. Performance Status (ECOG Scale)

Measures a patient’s ability to perform daily activities:

• 0: Fully active
• 1-2: Mild to moderate limitations
• 3-4: Severe disability

5. Treatment Modalities

• Surgery, Chemotherapy, Radiation
• Immunotherapy & Targeted Therapy

How Our Cancer Survival Rate Estimator Calculator Works

Our tool estimates survival probability based on:

1. Demographics (Age, Gender, BMI)

• Younger patients generally have better outcomes.
• BMI affects treatment tolerance and recovery.

2. Cancer-Specific Factors

• Type (Breast, Lung, Prostate, etc.)
• Stage (I-IV)
• Tumor Size & Spread

3. Treatment & Response

• Surgery Success
• Response to Chemo/Radiation

4. Overall Health Status

• Chronic Conditions (Diabetes, Heart Disease)
• Lifestyle (Smoking, Alcohol, Diet)

Interpreting Your Results

After entering your details, the calculator provides:

✅ Estimated Survival Rate (%) – Your statistical prognosis.
✅ Risk Level (Low/Medium/High) – Based on color-coded progress bars.
✅ Personalized Interpretation – Explains key influencing factors.

Example Results Breakdown:

Factor	Impact on Survival Rate
Early Stage (I-II)	Higher survival (70-99%)
Metastatic (Stage IV)	Lower survival (5-30%)
Good Treatment Response	Improves prognosis by 10-20%
Poor Performance Status (ECOG 3-4)	Reduces survival likelihood

Why Survival Rates Matter

• Helps in treatment decision-making.
• Provides realistic expectations for patients and families.
• Identifies lifestyle changes that may improve outcomes.

Limitations of Survival Rate Estimates

• Not a definitive prediction – Individual results vary.
• Based on historical data – New treatments may improve outcomes.
• Does not replace medical advice – Always consult an oncologist.

Final Thoughts

Understanding cancer survival rates empowers patients to make informed decisions. Use our Free Cancer Survival Rate Calculator to estimate your prognosis, discuss results with your doctor, and explore ways to improve your health outcomes.

🔗 Try the calculator now and share your results!

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