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When adding groups to a trial, you assign to them the interventions currently abstracted for the trial.

The following rules apply to each trial:

• There must be at least one group/cohort that implies that the entire study subject population receives the same intervention.

• The number of groups/cohorts added to the trial must coincide with the number indicated in the trial’s Design Details. See Abstracting Non-Interventional Trial Design Details .

• Every group/cohort must have at least one assigned intervention.
• Every intervention must be assigned to at least one group/cohort.
• A trial must have only one group with the same combination of description and associated intervention.

Trials can have multiple group/cohort records. Each record displays the following group information:

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Adding Groups

You can add one or more groups to a trial according to the number specified in the trial’s design details. See Abstracting Non-Interventional Trial Design Details .

How to Add Groups

1. Search for the trial of interest. In the search results, click the NCI Trial Identifier link for that trial.
2. On the Scientific Data menu, click Groups/Cohorts. The Groups page appears, with or without any group records displayed.
3. Click Add. The Add Group page appears. The interventions that have been abstracted previously are displayed on the right side of the page.
   
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4. In the check boxes and text fields, select or enter the appropriate information. The following table describes the fields. An asterisk (*) indicates a required field.

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   Field	Instruction/Description
   Label*	Enter the descriptive name of the group.
   Description*	Enter a brief description of the group.
   Assignment	Select the check box(s) in the column for the intervention(s) assigned to the current group.

5. Repeat the steps above until all groups have been assigned an intervention and all interventions have been assigned to at least one group.
6. Click Save.

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Editing Groups

You can edit group records as necessary.

How to Edit Group Records

1. Search for the trial of interest. In the search results, click the NCI Trial Identifier link for that trial.
2. On the Scientific Data menu, click Groups/Cohorts. The Groups page appears.
3. In the Edit column for a given record, click the Edit icon.
   The Edit Group page appears.

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4. Make changes as necessary to the Label, Description, or Intervention Assignment according to instructions in Adding Groups.

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5. Click Save.

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Deleting Groups

When you delete groups from a trial, you delete them from the system, and can not recover them. If you delete a record accidentally, follow the instructions in Adding Groups to add it back.

How to Delete Groups

1. Search for the trial of interest. In the search results, click the NCI Trial Identifier link for that trial.
2. On the Scientific Data menu, click Groups/Cohorts. The Groups page appears.
3. In the Delete column, select the check box for the appropriate record(s), and then click Delete.
4. To delete all groups, click Select All, and then click Delete.

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