RE: sample size and sig levels

["Mark Schmitz" <mschmitz@xxxxxxxxxxxxxxx>]

Bill,

The usual adjustment when working with very large samples is to choose a
smaller value for alpha.  Something like .01 or .001 rather than the
usual .05 level.

Mark Schmitz

-----Original Message-----
From: owner-CHILD-MALTREATMENT-RESEARCH-L@xxxxxxxxxxx
[mailto:owner-CHILD-MALTREATMENT-RESEARCH-L@xxxxxxxxxxx] On Behalf Of
bill higgins
Sent: Thursday, May 08, 2003 5:55 PM
To: Child Maltreatment Researchers
Subject: sample size and sig levels

I recently read an article that had an extremely large
sample (population study of health care).  The
differences looked small but were statistically
significant.  should there be adjustments made for
extremely large samples?

bill


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