Support

Help, information and how-to guide to getting the best out of this website.

Using Search

Searching for Trial Records

What effective search strategies can be used?

To make your search more effective, we recommend you try the following:

  • Be specific. Try using words that are unique or try adding descriptive words. Use specific words to describe exactly what you are looking for.
  • If you get too few results or your Search does not find what you are looking for, try using words with a similar meaning as your original words.
  • Check your spelling. A single misspelled or mistyped word can change your results.
  • Look carefully at the result of your search. Your search may not return exactly what you are looking for, but looking at the results may help you see the words that were found and provide ideas for other searches.

Simple Search

The simple search consists of the search entry field and searches the following fields:

  • Public Title
  • Trial Identifying Number
  • Health Condition(s) or Problem
  • Study funded by
  • Interventions
  • Study sponsored by
  • Recruitment Status
  • Study sponsored by
  • Nation
  • Trial Location

Advanced Search

The following fields can be used for more advanced searching:

  • Keyword: Use this field to refine your search in addition to other fields used in the advanced search.
  • 'Public Title' Contains: This is the Public Title of the Trial.
  • 'Trial Identifying Number' contains: Unique identifying number assigned by the Primary Registry to the Trial. This is useful when you know the ID number for the trial you are looking for.
  • 'Health Condition(s) or Problem' contains: Primary health condition(s) or problem(s) studied (e.g., depression, breast cancer, medication error).
  • 'Nation' contains: Country where the Trial is taking place (for the United Kingdom this has been broken down into the four Home nations (see How the Nation and Trial Location Fields are Populated below).
  • 'Trial Location' contains: City where the Trial is taking place or where the Principal Investigator is based.
  • 'Interventions' Contains: The intervention(s) and the comparator/control(s) being studied. For example, the generic name, chemical name, or company serial number of a drug or treatments (e.g., "low-fat diet, exercise").
  • Recruitment status: Patient Recruitment status of the trial.
  • 'Date of registration' (from and to): Date when trial was officially registered in the Primary Registry.
  • 'Study funded by' contains: The individual, organisation, group or other legal entity which provides finances for the study.
  • 'Study sponsored by' contains: The individual, organisation, group or other legal entity which takes responsibility for initiating, managing and overseeing a study.

Free-Text Keyword Queries

The UKCTG website has rules for free-text searching. You can use free-text searching in the simple search field and the keyword field in advanced search.

Building Free-Text Keyword Queries

Free text keyword queries are case-insensitive, and the length is limited to 2,048 characters. You can build a keyword query by using one or more of the following as free-text expressions:

  • A word (includes one or more characters without spaces or punctuation).
  • A phrase (includes two or more words together, separated by spaces; however, the words must be enclosed in double quotation marks).

Using Free-Text Words

When you use a word in a free-text keyword query, Search returns results based on exact matches. However, you can specify part of a word, from the beginning of that word, by using the wildcard operator (*).

For example, the following queries return searches that contain the terms "federated" and "search":

  • federated search
  • federat* search
  • search fed*

Using Phrases

When you use a phrase in a free-text keyword query, the search returns where both expressions are located in the body of the text. To specify a specific phrase in a keyword query, you must use double quotation marks.

Data Sources Used on UKCTG

Two sources of data are currently used on this website:

Further sources will be added over time.

How the Nation and Trial Location Fields are Populated

Where to Find Them

The Nation and Trial Location fields can be seen within the Trial section of both the General Public and Health Professional views. Nation represents the United Kingdom constituent country or countries where the trial is based (England, Northern Ireland, Scotland and or Wales). Trial Location represents United Kingdom city or cities where the trial is based.

Nation Derivation for ClinicalTrials.gov Data

The various location fields from ClinicalTrials.gov are translated into one or many United Kingdom constituent countries (England, Northern Ireland, Scotland and or Wales) and used to populate the Nation field.

Nation Derivation for ISRCTN Data

The address section of the Contact for Public Queries field from ISRCTN is translated into one or many United Kingdom constituent countries (England, Northern Ireland, Scotland and or Wales) and used to populate the Nation field.

Trial Location Derivation for ClinicalTrials.gov Data

The various location fields from the ClinicalTrials.gov register are translated into one or many United Kingdom cities and used to populate the Trial Location field.

Trial Location Derivation for ISRCTN Data

The address section of the Contact for Public Queries field from ISRCTN is translated into one or many United Kingdom cities and used to populate the Trial Location field.

Trial Statuses

The following trial statuses are used on this website:

  • Not recruiting: participants are not yet being recruited OR that the study is ongoing (i.e. patients are being treated or examined), but participants are not currently being recruited or enrolled.
  • Recruiting: participants are currently being recruited OR that participants are being (or will be) selected from a predetermined population.
  • Completed: the study has concluded normally; participants are no longer being examined or treated (i.e. last patient's last visit has occurred).
  • Stopped: recruiting or enrolling participants has halted prematurely but potentially will resume OR that recruiting or enrolling participants has halted prematurely and will not resume; participants are no longer being examined or treated, OR the study halted prematurely, prior to enrolment of the first participant.

The following table shows how UKCTG trial status values are mapped to the status values in the source registers.

UKCTG ClinicalTrials.gov ISRCTN
Not recruiting Not yet recruiting
Recruiting Recruiting
Enrolling by invitation
Available
Ongoing
Completed Completed
No Longer Available
Completed
Stopped Suspended
Terminated
Withdrawn
Stopped

Duplicate Trials

Trials may be registered in more than one register at a time, due to which two records of the same trial are imported into the UKCTG database. The UKCTG website does not suppress any information by eliminating the duplicate records, but it rather displays the duplicate trials by grouping them together to visually alert the users that 2 or more records correspond to the same trial. The symbol, indicating that a duplicate trial exists, can be seen on the left hand side of the trial title. Clicking on this symbol would bring up the list of duplicate trials.

Using this UKCTG website

Accessibility

The Disability Discrimination Act

The Disability Discrimination Act 1995 states that it is unlawful to discriminate against disabled persons in connection with the provision of facilities and services. This duty extends to the provision of websites such as UKCTG.

A person has a disability for the purposes of this Act if they have a physical or mental impairment which has a substantial and long-term adverse effect on their ability to carry out normal day-to-day activities.

Website Compliance

Website Facilities

The following functions and features have been implemented:

  • Access keys.
  • High contrast view.
  • English language only at an appropriate reading age.
  • No audio, embedded video, automated refreshes, animated, blinking or flashing content.

Using Access Keys

This website uses the following access keys. Please refer to your browser guidance to find out how to use access keys for that particular browser.

  • Alt 1 - Home Page
  • Alt 2 - Search
  • Alt 3 - About Us
  • Alt 4 - Useful Links
  • Alt 5 - Help
  • Alt 6 - Contact Us

JavaScript

This website can be used when JavaScript is turned off with the following exceptions:

  • For duplicates trials the duplicate icon is visible to indicate that there is a duplicate trial in the search result list. But the icon cannot be opened.
  • The Useful Links section will show every link with no filtering available.
  • Hover text on the advanced search and Search Results pages will not show.
  • Expandable sections within trial details will remain expanded.
  • The hover box for "Recruitment Status what do they mean" box won't show.
  • "Bookmark and Share" link functions will be disabled.
  • On Advanced Search page when you uncheck the "View All" check box on the Nation and Recruitment Status sections all the checked fields are cleared. With JavaScript off all the fields except "View All" remain checked.

Changing Text Size (zooming) in Web Browsers

To change the size of text in most popular web browsers, use the following keys:

  • Ctrl + to increase text size.
  • Ctrl - to increase text size.
  • Ctrl 0 to reset text size.

Most popular browsers also have an option to zoom or change text size on the View menu.

Web Browser Compatibility

This website supports the latest versions of several commonly used web browsers, including Microsoft Internet Explorer, Mozilla Firefox, Apple Safari, Google Chrome and Opera, regardless of the device hardware or operating system, provided that page controls are enabled. Other standard web browsers should also work, but they have not been tested. If you experience problems please use one of the supported browsers above and ensure it is up to date. This is especially the case for Internet Explorer 6. For more information on how to upgrade your Internet Explorer, please visit ie6Countdown.com.