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st: MI reshape

From   Laura Gibbons <>
Subject   st: MI reshape
Date   Thu, 2 Feb 2012 12:54:23 -0800 (PST)

I'm having problems with MI reshape which I've been unable to replicate in a public data set. My data has 20 sets of imputations.

My reshape command dies at the "assembling results" stage:

. mi reshape long adas12_m, i(studyid) j(month)

reshaping m=0 data ...
(note: j = 0 6 12 18)

Data                               wide   ->   long
Number of obs.                       87   ->     348
Number of variables                  55   ->      53
j variable (4 values)                     ->   month
xij variables:
     adas12_m0 adas12_m6 ... adas12_m18   ->   adas12_m

reshaping m=1 data ...

reshaping m=2 data ...

reshaping m=20 data ...

assembling results ...
variable adas12_m not found

I tried "noupdate" and also got an error message:

. mi reshape long adas12_m, i(studyid) j(month) noupdate

reshaping m=0 data ...
option noupdate not allowed

Does anyone have any suggestions?  I may have to go directly to Stata.



Laura E. Gibbons, PhD
General Internal Medicine, University of Washington
Box 359780, Harborview Medical Center, 325 Ninth Ave, Seattle, WA 98104
phone: 206-744-1842, fax: 206-744-9917,
Office address: 401 Broadway, Suite 5122.7
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