Lung Cancer Risk Calculator

This calculator relies on validated epidemiological algorithms to evaluate your cumulative risk profile. First, your Body Mass Index (BMI) is determined using your mass and height via the standard formula: BMI = mass / height². Next, your comprehensive risk scores—including a specialized six-year prognostic outlook (Risk_6y)—are calculated by synthesizing variables such as biological sex, chronological age, daily cigarette consumption, total years smoked, time elapsed since quitting (quit years), and the presence of a chronic cough. These factors weigh cellular exposure to carcinogens against physiological resilience to output a percentage probability.

Imagine a 55-year-old male who has a history of smoking 20 cigarettes per day for 30 years and has not quit. He measures 1.75 meters in height, weighs 80 kilograms, and experiences a persistent chronic cough. First, we calculate his BMI as 80 / (1.75)², which equals 26.1 kg/m². Incorporating his age (55), high daily cigarette consumption, 30-year duration, active smoking status, and chronic cough into the multi-variable regression model yields a significantly elevated baseline risk score and a distinct six-year risk projection. This numerical output highlights the urgent medical benefit of smoking cessation programs and regular clinical screenings.

Accurate results depend entirely on precise data entry; ensure your smoking duration and daily cigarette counts reflect your true historical averages rather than temporary fluctuations. Remember that this calculator provides an educational statistical estimate, not a definitive medical diagnosis. If you exhibit long-term respiratory symptoms or fall into a high-risk category, schedule an appointment with a physician to discuss low-dose computed tomography (LDCT) screening options.