About Sensitosis
Sensitosis is a free daily sensitivity and specificity game. Each day brings five real medical tests, from COVID RATs and mammograms to the PSA and the Ottawa ankle rules. Guess how many people with the condition each test catches and how many without it it correctly clears. Then see 100 people on a grid, with the real published figure and its source.
How to play
- Slide the first bar: out of 100 people with the condition, how many test positive?
- Slide the second: out of 100 without it, how many test negative?
- Closer guesses score more, up to 100 a test.
- The reveal shows who was caught, who was missed and who got a false alarm.
Who it’s for
Students learning evidence-based medicine, doctors, nurses, and anyone who has wondered how accurate a test really is.
Common questions
What are sensitivity and specificity?
Sensitivity is how good a test is at catching people who have the condition. Specificity is how good it is at clearing people who don't. A test can be great at one and poor at the other.
Where do the numbers come from?
Systematic reviews, Cochrane, NICE and similar sources, linked on every reveal and rounded.
Is Sensitosis free?
Yes. It's free to play in your browser, with no sign-up, no download and no ads.
Past puzzles and answers · All medical games and quizzes
Try next: Panelysis (blood test quiz) · Dxtective (daily diagnosis game) · Triviosis (daily medical trivia quiz)