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Error in Lordif: slope is missing or negative
Terwee, CB
·
Sep 29, 2017
·
r-help
Hi all I am not an experienced user of R. I am trying to perform DIF analysis using Lordif and I get the follow error: > GroupDIF <- lordif(resp.data=Resp, group=Group, criterion="R2", pseudo.R2="McFadden", R2.change=0...
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