topic Re: proc means output doesn't match results in SAS Enterprise Guide

proc means output doesn't match results

RobF — Tue, 06 Jan 2015 16:43:42 GMT

I'm generating mean and n statistics for two outcome variables, ip_count & bh_ed_count, by a third Yes/No categorical variable named "A" using proc means:

proc means data=ipdf_adults n mean;

where A in('Y','N');

by A;

var ip_count bh_ed_count;

output out=ipdf_adults_mean_a ;

run;

The results output listing for proc means is correct:

--------------------------------------------------------------- A=N ----------------------------------------------------------------

The MEANS Procedure

Variable Label N Mean

--------------------------------------------------

ip_count IP_COUNT 186 0.6021505

bh_ed_count BH_ED_COUNT 186 0.9301075

--------------------------------------------------

--------------------------------------------------------------- A=Y ----------------------------------------------------------------

Variable Label N Mean

--------------------------------------------------

ip_count IP_COUNT 54 0.5925926

bh_ed_count BH_ED_COUNT 54 1.2407407

--------------------------------------------------

However the output dataset incorrectly lists the mean values as 1:

A	_TYPE_	_FREQ_	_STAT_	ip_count	bh_ed_count
N	0	186	N	186	186
N	0	186	MIN	0	0
N	0	186	MAX	5	48
N	0	186	MEAN	1	1
N	0	186	STD	1	4
Y	0	54	N	54	54
Y	0	54	MIN	0	0
Y	0	54	MAX	4	9
Y	0	54	MEAN	1	1
Y	0	54	STD	1	2

Any ideas what's going on here? Thanks

Re: proc means output doesn't match results

Reeza — Tue, 06 Jan 2015 16:51:10 GMT

My guess is rounding in the presentation, try changing the format of the data in the viewer or in a data step.

data ipdf_adults_mean_a;

set ipdf_adults_mean_a;

format ip_count bh_ed_count 12.4;

run;

If you want a different structure for the table, look into the STACKODS output.

Base SAS(R) 9.3 Procedures Guide, Second Edition

Re: proc means output doesn't match results

RobF — Tue, 06 Jan 2015 17:24:49 GMT

Thanks Reeza, that fixed the problem!

And I can insert the format statement into proc means to save myself a step:

proc means data=ipdf_adults n mean;

format ip_count bh_ed_count 12.4;

where A in('Y','N');

by A;

var ip_count bh_ed_count;

output out=ipdf_adults_mean_a ;

run;