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The MIXED Procedure |
WEIGHT Statement |
If you do not specify a REPEATED statement, the WEIGHT statement operates exactly like the one in PROC GLM. In this case PROC MIXED replaces and
with
and
, where
is the diagonal weight matrix. If you specify a REPEATED statement, then the WEIGHT statement replaces
with
, where
is a diagonal matrix with elements
. Observations with nonpositive or missing weights are not included in the PROC MIXED analysis.
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