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Cookie notice

This website uses essential cookies and browser storage to make your visit run smoothly and remember display choices. With your permission, optional analytics may also give us basic statistics that help improve the project website.

The site does not use advertising cookies. Optional analytics is off unless you choose to allow it.

Cookies and storage needed for the site

The website uses essential cookies or local storage for normal site operation. This can include remembering your cookie choice, accessibility and display preferences such as text size or contrast, security/session state and form-protection checks.

These are not used for advertising and cannot be switched off through this website because parts of the site need them to work properly.

Analytics

If you allow analytics, the website may collect basic page-use information to help the project understand which pages and resources are useful and where the site could be improved. This can include interactions with project videos, such as starting a video, viewing progress, completion, playback quality or errors, and interactions with participant-information content such as opening the Participant Information Sheet, Questions and Answers, or continuing to a questionnaire.

These analytics are used in aggregate to understand how the website and information materials are being used. They are not linked to Qualtrics respondent identities or questionnaire answers. If you choose to continue without analytics, you can still use the website normally, watch videos, read participant information and open approved questionnaire links.

Qualtrics and external services

This website may link to Qualtrics surveys or other external services. Your cookie choice here controls this project website only. It does not block approved Qualtrics links. Qualtrics and other external services may have their own privacy and cookie arrangements once you open them.

Choosing not to allow analytics on this website does not affect whether you can open a Qualtrics link, and it does not control cookies used by Qualtrics after you leave this site or open a questionnaire.

Managing your choices

You can change your cookie choice at any time from this page.

For wider information about website information and public forms, read the Privacy notice.

Search analytics and cookie choices

If you allow optional analytics, a site search can record the search words, the date/time, how many results were returned and whether the search returned no results. This is used to understand what information visitors are looking for and to improve missing or hard-to-find content. Search terms are not recorded when optional analytics is not allowed.

The site does not intentionally attach a search term to a name, email address or raw IP address. Search events use the same first-party analytics consent choice and are retained for 10 years. Search terms are limited to 180 characters and are not recorded when optional analytics is declined.

Your optional analytics choice is stored in this browser’s localStorage under hd_analytics_consent. It is not a conventional analytics cookie, so it may not appear in a browser’s cookie-only list. Clearing this site’s browser data or local storage removes the saved choice, and the site will ask you again on your next visit.

Watch: why your cookie choices matter