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 __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com
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