paired vs. independent (SAS) [General Sta­tis­tics]

posted by martin  – Austria, 2008-08-29 17:26 (6500 d 06:50 ago) – Posting: # 2280
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dear joshi !

in the case of two treatments A and B:
independent usually means: treatment A ist administered in n subjects and treatment B is adminstered in m DIFFERENT (i.e. independent) subjects
dependent or paired usually means: treatment A is administered in n subjects and after a period of time treatment B is administered in the same subjects.

NOTE: statistical analysis is different for these two scenarios
NOTE: a cross-over design is a special case of a "paired design"

hope this helps

martin

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