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Patient numbers
The system configuration setting UniquePatIDSwtch (Require Unique Patient ID in the InForm application Admin user interface) enables you to specify that the InForm application requires all patient numbers to be unique across a trial or across a site. The default setting is not to require unique patient numbers.
In a trial where patient record transfer occurs, the InForm application detects a duplicate patient number at the destination site and allows users to change the patient number to one that is not in conflict. To prevent the possibility of conflict and the necessity of changing patient numbers, you can set the UniquePatIDSwtch configuration variable to require unique patient numbers across the trial.
Trial designers can set up patient numbers to include the site mnemonic as a portion of the patient number and can write rules that use this mnemonic. If a patient is transferred to a new site, the site information embedded in the patient number is no longer accurate. Therefore, this practice is not recommended for trials in which patient transfer is anticipated.
