The registry record will be the only publicly available document on a trial until results from the trial are published. Some examples of situations when studies might be quoted are:
- When a manuscript reporting the results of the trial is published or otherwise reported
- When a manuscript reporting methodological issues relating to a particular trial are published or otherwise reported
- In protocols to systematic reviews, or in completed systematic reviews (e.g. when a list of ongoing trials are included)
- In protocols to prospective meta-analyses, which will list the ongoing trials to be included
- In any manuscript when reference to an ongoing or unpublished (or even published) trial might be relevant
Source: WHO