extracting basic measures from proc univariate and reordering them

Chang — Wed, 01 Jan 2014 08:49:34 GMT

dear Community members,

Happy 2014! Extracting descriptive statistics is among the very first steps of many statistical analyses. I am trying to automate the routine of getting basic measures, such as mean, median, standard deviation and IQR from PROC UNIVARIATE. Unfortunately I got stuck when attempting to extracting data from an ods object called 'BasicMeasures.' By default you will get the following output when using ods output BasicMeasures=:

where the first few columns are your BY-group variables, followed by four basic measure columns- LocMeasure (the highlighted one), LocValue, VarName and VarValue. I would like to create one subset containing the BY-groups+ LocMeasure+ LocValue and one subset containing BY-groups+ VarName and VarValue. As shown in the screenshot of the column attributes, the column name I want to extract is correctly identified but I got an error message 'ERROR: variable LocMeasure and LocValue are not found in the work file. Same error occurs for the other two variables VarName and VarValue. I suspect this may be due to the conflict between the 3 data set options KEEP=, WHERE= and RENAME= in my SET statement, because my codes are working when RENAME= is removed. But I have to rename the two columns in the two subsets so I can stack them later. Any idea? Here are my codes

*step 1: sort data*;
proc sort data=OA_MT_wide; by scoreType scoreValue scoreOrder; run;

*step 2: output basic measures*;
proc univariate data= OA_MT_wide normal;
    by scoreType scoreValue scoreOrder ;
    class scoreOrder;                            
    var age;
    ods output TestsForNormality=     _normality_age;
    ods output BasicMeasures=        _basic_age;
run;

*step 3: get mean, median, standard deviation and IQR and group them into two columns- statType and statValue*;
data basic_age; set
    _basic_age(keep = scoreType scoreValue scoreOrder LocMeasure LocValue
                in=a
                where=(LocMeasure in ('Mean' 'Median'))
                rename=(LocMeasure= statType LocValue= statValue))
    _basic_age(keep = scoreType scoreValue scoreOrder VarName VarValue
                in=b
                where=(VarName in ('Std Deviation' 'Interquartile Range'))
                rename=(VarName= statType VarValue= statValue))
                ;
RUN;

My data are in the excel worksheet 'data'. My codes are also attached (normality_short.sas) for your convenience. Many thanks in advance.rder

Re: extracting basic measures from proc univariate and reordering them

data_null__ — Wed, 01 Jan 2014 09:27:33 GMT

Change your WHERE data set options to use the RENAMEd variable names. Where=(statType in('Mean' ...

I would look to PROC SUMMARY to create data sets of summary statistics, should be much easier.

Re: extracting basic measures from proc univariate and reordering them

Chang — Fri, 10 Jan 2014 02:55:12 GMT

thank you very much. In proc summary, each basic measure can be explicitly specified and this also produce a wide-format output.

topic Re: extracting basic measures from proc univariate and reordering them in SAS Programming

extracting basic measures from proc univariate and reordering them

Re: extracting basic measures from proc univariate and reordering them

Re: extracting basic measures from proc univariate and reordering them