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When adding arms to a trial, you assign to them the interventions currently abstracted for the trial. For instructions on abstracting interventions, refer to Abstracting Interventions.
The following rules apply to each trial: Anchor
There must be at least one arm/group that implies that the entire study subject population receives the same intervention.
The number of arms/groups added to the trial must coincide with the number indicated in the trial’s Design Details. See Abstracting Interventional Trial Design Details.
- Every arm must have at least one assigned intervention (except for the arm type "no intervention").
- Every intervention must be assigned to at least one arm.
- There must be only one arm with the same combination of description and associated intervention.
- Arm details for single-arm trials are not required.
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Field | Definition | ||||||
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Label | Short name used to identify the arm or comparison group. | ||||||
Type | Function of the arm. Valid types are as follows:
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Description | Brief description of the arm or comparison group to distinguish it from other arms/groups in the trial. | ||||||
Assigned Interventions | Intervention(s) assigned to a given arm.
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Adding Arms
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You can add one or more arms to a trial according to the trial’s design details.
How to Add Arms
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Search for the trial of interest. For instructions, refer to Searching for Trials in PA.
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For instructions, refer to
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On the Scientific Data menu, click Arms. The Arms page appears, with or without any arm records displayed.
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the
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Trial Description
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Instruction
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Label*
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Type the descriptive name of the arm.
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Type*
Select the appropriate arm function. Valid values are as follows:
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Arm Description
Type a brief description of the arm.
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Assignment
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For arm types other than No Intervention, select the check box in the column for the intervention assigned to the current arm.
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Editing Arms
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You can edit arm records as necessary.
How to Edit Arm Records
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Search for the trial of interest. For instructions, refer to Searching for Trials in PA.
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In the search results, click the NCI Trial Identifier link for that trial. The Trial Identification page appears.
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On the Trial Identification page, check out the trial. For instructions, refer to Checking In and Checking Out Trials. (This checkout step is optional for Super Abstractors.)
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On the Scientific Data menu, click Arms. The Arms page appears.
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following pages:
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Deleting Arms
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When you delete arms from a trial, you delete them from the system, and can not recover them.
How to Delete Arms
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Search for the trial of interest. For instructions, refer to Searching for Trials in PA.
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In the search results, click the NCI Trial Identifier link for that trial. The Trial Identification page appears.
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On the Trial Identification page, check out the trial. For instructions, refer to Checking In and Checking Out Trials. (This checkout step is optional for Super Abstractors.)
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On the Scientific Data menu, click Arms. The Arms page appears.
In the Delete column for the appropriate record, click the Delete icon.
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