<!-- LLM_VERSION_INFO
FORMAT: text/markdown
CONTENT_TYPE: article
ORIGINAL_URL: https://brookespublishing.com/resource-tag/sensitivity
ALTERNATE_VERSION: resource-tag/sensitivity/index.html (text/html)
EXTRACTION_DATE: 2026-07-26T15:43:38.056Z

This is the markdown version with text-only content (images converted to alt-text).
For rich formatting with images, request the HTML version at: resource-tag/sensitivity/index.html
-->

## TILLS Sensitivity & Specificity

This table from the TILLS Examiner's Manual shows the sensitivity and specificity levels by age for all ages tested by the TILLS. [Read More](/content/resource-library/tills-sensitivity-specificity/index.html)

| Cookie                             | Duration                     | Description                                                                                         |
|------------------------------------|------------------------------|-----------------------------------------------------------------------------------------------------|
| nabSegmentation                     | 4 months                     | Description is currently not available.                                                             |
| rc::a                              | Never Expires                | This cookie is set by the Google recaptcha service to identify bots to protect the website against malicious spam attacks. |
| wpEmojiSettingsSupports            | session                      | WordPress sets this cookie when a user interacts with emojis on a WordPress site.                  |
| rc::c                              | session                      | This cookie is set by the Google recaptcha service to identify bots to protect the website against malicious spam attacks. |
| VISITOR_PRIVACY_METADATA            | 6 months                     | YouTube sets this cookie to store the user's cookie consent state for the current domain.          |
| _GRECAPTCHA                        | 1 year                       | Google Recaptcha                                                                                   |
| NID                                | 1 year                       | Google Recaptcha NID                                                                                |
| VISITOR_INFO1_LIVE                 | 6 months                     | A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface. |
| yt-remote-connected-devices        | Never Expires                | YouTube sets this cookie to store the user's video preferences using embedded YouTube videos.      |
| ytidb::LAST_RESULT_ENTRY_KEY       | Never Expires                | The cookie ytidb::LAST_RESULT_ENTRY_KEY is used by YouTube to store the last search result entry that was clicked by the user. |
| yt-remote-device-id                | Never Expires                | YouTube sets this cookie to store the user's video preferences using embedded YouTube videos.      |
| yt-remote-session-name             | session                      | The yt-remote-session-name cookie is used by YouTube to store the user's video player preferences using embedded YouTube video. |
| yt-remote-fast-check-period        | session                      | The yt-remote-fast-check-period cookie is used to store the user's video player preferences for embedded YouTube videos. |
| yt-remote-session-app              | session                      | The yt-remote-session-app cookie is used by YouTube to store user preferences regarding the interface of the embedded YouTube video player. |
| yt-remote-cast-available           | session                      | The yt-remote-cast-available cookie is used to store the user's preferences regarding whether casting is available on their YouTube video player. |
| yt-remote-cast-installed           | session                      | The yt-remote-cast-installed cookie is used to store the user's video player preferences using embedded YouTube video. |
| _ga_*                              | 1 year 1 month 4 days       | Google Analytics sets this cookie to store and count page views.                                   |
| _ga                                | 1 year 1 month 4 days       | Google Analytics sets this cookie to calculate visitor, session and campaign data and track site usage for the site's analytics report. |
| _hjSessionUser_*                   | 1 year                       | Hotjar sets this cookie to ensure data from subsequent visits is attributed to the same user ID.  |
| _hjSession_*                       | 1 hour                       | Hotjar sets this cookie to ensure data from subsequent visits is attributed to the same user ID.  |
| _gid                               | 1 day                        | Google Analytics sets this cookie to store information on how visitors use a website.               |
| YSC                                | session                      | YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages.    |
| _gat                               | 1 minute                     | Google Universal Analytics sets this cookie to restrain request rate.                               |
| __Secure-YEC                       | past                         | YouTube sets this cookie to store the user's video player preferences using embedded YouTube video. |
| uid                                | Never Expires                | Set by publuu                                                                                     |
| __Secure-YNID                      | 6 months                     | Google cookie used to protect user security and prevent fraud, especially during the login process. |
| __Secure-ROLLOUT_TOKEN             | 6 months                     | YouTube sets this cookie to manage feature rollout and experimentation.                           |
