Privacy & Cookies
Last updated: September 8, 2026
Worth the Test (worththetest.com) is a free, educational tool for reasoning about the statistics of medical screening. This page explains what data is — and is not — collected when you visit, and how cookies are used by our advertising partner.
Information this site collects
The tool itself requires no account and does not ask you for any personal information. Every calculation runs entirely in your browser; the calculator does not submit your inputs to a calculation service. Scenario values are included in the page URL so a link can reproduce them. Opening, sharing, or following links from a scenario can expose those values to recipients, browser history, hosting logs, and services that receive the page URL. Use hypothetical numbers and do not enter identifying medical information. There is no login, no newsletter, and no contact form.
The site is served as static files by Cloudflare Pages, which, like most web hosts, may process standard technical request data (such as IP address and browser type) to deliver the page and protect against abuse. See Cloudflare's privacy policy.
Visit counts are measured with Cloudflare Web Analytics, which is privacy-first and cookieless: it sets no cookies, stores nothing in your browser, and does not fingerprint you or track you across other sites.
The site's typography (the Inter and Fraunces typefaces) is self-hosted — the font files are served from this site itself, not from a third-party font CDN, so loading the page does not send your IP address to Google or any other font provider.
Advertising & cookies
This site is built to support ads served by Google AdSense, but advertising is not currently active: no Google advertising scripts load and no advertising cookies are set. The following describes how cookies would be used if and when ads are turned on:
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website and other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
- You may opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of a third-party vendor's use of cookies for personalized advertising at aboutads.info/choices and optout.networkadvertising.org.
For more detail on how Google handles data when you use sites that use its services, see How Google uses information from sites or apps that use our services.
Visitors in the EEA, UK, and Switzerland
Advertising is not currently enabled on this site, so no advertising cookies are set. If personalized advertising is enabled in the future, visitors in regions that require consent will be asked through a consent message before any advertising cookies are set, and will be able to change or withdraw that choice at any time.
Children
This site is intended for a general audience and is not directed at children, and we do not knowingly collect personal information from children.
Changes to this policy
We may update this policy from time to time. Any changes will be posted on this page with a revised "last updated" date.
Contact
Reminder: Worth the Test is an educational model and is not medical advice.