Randomizing groups with no repeats

snowyapril

New Member
Joined
Jun 8, 2009
Messages
3
Hi there,

I'm trying to randomize the forms we use for study participants for two different sessions without repeats.

Specifically, at session #1 , participants are randomized to receive Form A, Form B, or Form C of the same measure. For session #2 , we want to randomize what form version they receive so that they are not getting the same form from session #1 . Therefore, if a participant was randomized to Form A at session #1 (from Forms A, B, and C), we want to randomize their receipt of either Form B or Form C at session #2 . If they were randomized to Form B at session #1 , then we would randomize either Form A or Form at session #2 . And so on...

How do I create this in excel without VBA?

Any help would be greatly appreciated. Please let me know if I can answer any clarifying questions. Thanks so much in advance!
 

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Workdays for a market open Mon, Wed, Friday?
Yes! Use "0101011" for the weekend argument in NETWORKDAYS.INTL or WORKDAY.INTL. The 7 digits start on Monday. 1 means it is a weekend.

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