Calculates the relative risk, comparing the probability of an outcome in an exposed group to the probability in an unexposed group.
Start with your values, or try a preset.
Enter Number of exposed subjects with the outcome, Total number of exposed subjects, Number of unexposed subjects with the outcome, and Total number of unexposed subjects in the units shown.
Read Probability of outcome in unexposed group, Probability of outcome in exposed group, and Relative Risk in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Number of exposed subjects with the outcome: 20; Total number of exposed subjects: 100; Number of unexposed subjects with the outcome: 10; Total number of unexposed subjects: 100
Probability of outcome in unexposed group: 0.1; Probability of outcome in exposed group: 0.2; Relative Risk: 2
Number of exposed subjects with the outcome: 5; Total number of exposed subjects: 100; Number of unexposed subjects with the outcome: 20; Total number of unexposed subjects: 100
Probability of outcome in unexposed group: 0.2; Probability of outcome in exposed group: 0.05; Relative Risk: 0.25
Number of exposed subjects with the outcome: 10; Total number of exposed subjects: 100; Number of unexposed subjects with the outcome: 10; Total number of unexposed subjects: 100
Probability of outcome in unexposed group: 0.1; Probability of outcome in exposed group: 0.1; Relative Risk: 1
Explore practical health calculators for BMI, due dates, age tracking, calorie planning, and other everyday estimates.
Continue with another tool on a related topic.
Compare a bone age already assessed by a clinician with chronological age in years and months. This tool calculates the age difference; it does not read X-rays, determine skeletal maturity or diagnose a condition.
Estimates a woman's risk of developing invasive breast cancer over the next 5 years and lifetime. This calculator uses the Gail Model, which considers factors such as age, race, personal history of breast biopsies, family history of breast cancer, and age at first menstrual period and childbirth.
This calculator helps analyze your caffeine intake from coffee, assesses potential health impacts, and provides personalized coffee consumption recommendations. It supports different brewing methods.
Calculates the average arterial pressure during a single cardiac cycle. MAP is considered a better indicator of perfusion to vital organs than systolic blood pressure.
Use the result as an estimate and confirm any medical decisions with a qualified professional.