Message-ID: <1351676569659-4647974.post@n4.nabble.com>
Date: 2012-10-31T09:42:49Z
From: rachel.cole
Subject: invalid labels; length 2 should be 1 or 0
In-Reply-To: <201209201029045863521@126.com>
I had the same problem, but found this note in the MICE package documentation
(at http://cran.r-project.org/web/packages/mice/mice.pdf):
Added June 25, 2012: The currently implemented algorithm does not handle
predictors that are
speci?ed as ?xed effects (type=1). When using mice.impute.2l.norm(), the
current advice is to
specify all predictors as random effects (type=2).
Warning: The assumption of heterogeneous variances requires that in every
class at least one observation has a response in y.
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