topic Re: Error with PROC MIANALYZE (Multiple Imputation Analysis Error Message) in Statistical Procedures

Error with PROC MIANALYZE (Multiple Imputation Analysis Error Message)

ronaldo7 — Sat, 17 Aug 2024 21:30:58 GMT

The error message I receive when I use PROC MIANALYZE reads:

ERROR: Within-imputation StdErr missing for variable  in _Imputation_= 1 in the input PARMS= data set.

I am using data from one of the National Health Interview Surveys. I have the full dataset already loaded. Here is my code working through the multiple imputation, proc surveylogistic, and then proc mianalyze:

*Imputation phase*;
proc mi data=nhis nimpute=5 out=mi_fcs ;
class HeartDisease SexualOrientation Sex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance URBRRL REGION;
fcs plots=trace(mean std); 
var HeartDisease AGEP_A SexualOrientation Sex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance URBRRL REGION;
fcs discrim(HeartDisease SexualOrientation Sex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance URBRRL REGION /classeffects=include) nbiter =10 ; 
run;


*Analysis phase*;
proc surveylogistic data = mi_fcs ;
	strata pstrat;
	cluster ppsu;
	weight WTFA_A;
	class SexualOrientation(ref='2') Sex RaceEthnicity(ref="2") Education IncomePovertyRatio BMICategory(ref="2") 
		HealthInsurance URBRRL REGION / param=glm;
	model HeartDisease(event='1') = SexualOrientation AGEP_A Sex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance
		URBRRL REGION;
	by _imputation_;
	ods output ParameterEstimates=a_mvn;
run;
quit;



*Compress data to avoid issues*;
data a_mvn;
set a_mvn;
parameter=compress(parameter);
run;


*Pooling phase*;
proc mianalyze parms=a_mvn;
MODELEFFECTS INTERCEPT AGEP_A SexualOrientation Sex RaceEthnicity Education IncomePovertyRatio BMICategory 
		HealthInsurance URBRRL REGION;
RUN;

I have no issues until running PROC MIANALYZE and then I receive the error message: "ERROR: Within-imputation StdErr missing for variable in _Imputation_= 1 in the input PARMS= data set."

I double checked and values for StdErr are present for all variable in _Imputation_=1 with the code:

proc print data = a_mvn;
where _imputation_ = 1;
run;

I would really appreciate your help with this! I have been spending so long trying to complete multiple imputation for this analysis, and I have no clue how to move forward with this error. I tried searching for results online. Some people resolved this issue by shortening their variable names if they were >20 characters, but none of my variable names are >20 characters. Any help or advice would be greatly appreciated! Thank you!

Re: Error with PROC MIANALYZE (Multiple Imputation Analysis Error Message)

Season — Sun, 18 Aug 2024 04:32:46 GMT

Check the output dataset from the SURVEYLOGISTIC procedure to see if it contains a column of standard errors. If not, add the COVB option in the MODEL statement after the slash.

Like this:

@ronaldo7 wrote:

*Other commands omitted*;
	model HeartDisease(event='1') = SexualOrientation AGEP_A Sex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance
		URBRRL REGION/covb;
	by _imputation_;
	ods output ParameterEstimates=a_mvn;
run;
quit;

Re: Error with PROC MIANALYZE (Multiple Imputation Analysis Error Message)

SAS_Rob — Sun, 18 Aug 2024 22:27:30 GMT

You should remove the data step in between SURVEYLOGISTIC and MIANALYZE as it is causing the issue because you are using PARAM=GLM which has a missing standard error. This step is unnecessary if you use the CLASS statement in MIANALYZE along with the CLASSVAR=CLASSVAL sub-option.

proc mianalyze parms(classvar=classval)=a_mvn;
class SexualOrientationSex RaceEthnicity Education IncomePovertyRatio BMICategory HealthInsurance URBRRL REGION;
MODELEFFECTS INTERCEPT AGEP_A SexualOrientation Sex RaceEthnicity Education IncomePovertyRatio BMICategory  HealthInsurance URBRRL REGION;
run;