This calculator provides a *general indication* of your risk factors for Sexually Transmitted Diseases (STDs).
It is NOT a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
No
Yes
Never
Rarely (e.g., less than once a year)
Regularly (e.g., annually or more)
Recently tested and results were negative
Understanding Your STD Risk
Sexually Transmitted Diseases (STDs), also known as Sexually Transmitted Infections (STIs), are infections passed from one person to another through sexual contact. This contact can include vaginal, anal, or oral sex. While many STDs can be treated, some can lead to serious long-term health problems if left untreated. Understanding your risk factors is the first step toward prevention and maintaining your sexual health.
Factors Influencing STD Risk
Several factors contribute to an individual's risk of contracting an STD. This calculator considers some of the most significant ones:
Number of Sexual Partners: The more sexual partners an individual has over a period, the higher their exposure risk to potential infections.
Partner's Number of Partners: Your risk also increases if your partners have had multiple sexual partners, as this widens the network of potential infections. This is often referred to as "network size."
Unprotected Sexual Encounters: Engaging in sexual activity without barrier protection (like condoms) significantly increases the risk of transmitting or acquiring STDs.
Presence of Symptoms: Experiencing symptoms associated with STDs can indicate an active infection, requiring immediate medical attention and potentially posing a higher transmission risk if sexual activity continues without precautions.
Testing Frequency: Regular STD testing is crucial for early detection and treatment, which prevents complications and further spread. Infrequent or no testing increases the risk of undetected infections.
Age: Younger individuals, particularly adolescents and young adults, are often at higher risk due to factors like lower condom usage rates and a higher likelihood of having partners with more sexual network connections.
How the Calculator Works (Simplified Model)
This calculator uses a simplified, non-diagnostic model to estimate risk based on the inputs provided. It assigns a qualitative risk level (Low, Moderate, High) based on a weighted scoring system of the factors entered. The exact formula is proprietary and designed for educational illustration, not clinical accuracy.
The core idea is that factors increasing exposure (more partners, unprotected sex) and decreasing detection (no testing, symptoms) contribute to a higher risk score. Age is also factored in, as epidemiological data shows higher prevalence in certain age groups.
Example Calculation Logic (Conceptual):
Each unprotected act adds points.
More partners add more points.
Higher partner partner counts multiply the risk potential.
Experiencing symptoms adds significant points.
Infrequent testing adds points compared to regular testing.
Age contributes a baseline risk modifier.
These points are summed and then mapped to a risk category.
Disclaimer
This tool is for informational purposes only. It does not diagnose, treat, or prevent any disease. It is essential to consult with a healthcare professional for accurate diagnosis, personalized risk assessment, and appropriate medical advice regarding sexual health and STDs. Consistent condom use, open communication with partners, and regular testing are the most effective ways to protect yourself and others.
function calculateRisk() {
var numPartners = parseFloat(document.getElementById("numPartners").value);
var partnerPartners = parseFloat(document.getElementById("partnerPartners").value);
var unprotectedActs = parseFloat(document.getElementById("unprotectedActs").value);
var symptomExperience = document.getElementById("symptomExperience").value;
var testingFrequency = document.getElementById("testingFrequency").value;
var age = parseFloat(document.getElementById("age").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous result
// Input Validation
if (isNaN(numPartners) || numPartners < 0 ||
isNaN(partnerPartners) || partnerPartners < 0 ||
isNaN(unprotectedActs) || unprotectedActs < 0 ||
isNaN(age) || age 5) partnerScore = 5;
else if (numPartners > 2) partnerScore = 3;
else if (numPartners > 0) partnerScore = 1;
var partnerNetworkScore = 0;
if (partnerPartners > 10) partnerNetworkScore = 6;
else if (partnerPartners > 5) partnerNetworkScore = 4;
else if (partnerPartners > 2) partnerNetworkScore = 2;
else if (partnerPartners > 1) partnerNetworkScore = 1;
var unprotectedScore = 0;
if (unprotectedActs > 10) unprotectedScore = 8;
else if (unprotectedActs > 5) unprotectedScore = 5;
else if (unprotectedActs > 0) unprotectedScore = 2;
var symptomScore = 0;
if (symptomExperience === "yes") symptomScore = 10;
var testingScore = 0;
if (testingFrequency === "never") testingScore = 6;
else if (testingFrequency === "rarely") testingScore = 3;
else if (testingFrequency === "regularly") testingScore = 1;
// "recently tested" implies low current risk from this factor
var ageScore = 0;
if (age >= 15 && age = 25 && age = 35) ageScore = 1;
// Calculate total risk score
// The formula combines factors, giving higher weight to immediate risks like symptoms and unprotected sex.
// Multiplying partner counts together conceptually reflects network risk amplification.
var totalScore = (partnerScore * 1.5) + (partnerNetworkScore * 2) + unprotectedScore + symptomScore + testingScore + ageScore;
// Determine risk level based on total score
var riskLevel = "";
var advice = "";
if (totalScore = 10 && totalScore < 20) {
riskLevel = "Moderate Risk";
advice = "Consider increasing precautions. Review condom usage and discuss testing with your partner(s).";
resultDiv.style.backgroundColor = "#ffc107"; // Warning Yellow
resultDiv.style.color = "#333"; // Darker text for yellow background
} else {
riskLevel = "High Risk";
advice = "Seek medical advice immediately. Get tested for STDs and discuss safer sex practices with a healthcare provider.";
resultDiv.style.backgroundColor = "#dc3545"; // Red for high risk
}
resultDiv.innerHTML = riskLevel + "" + advice + "";
resultDiv.style.color = "white"; // Ensure white text for contrast on colored backgrounds
}