Missing values note after running proc logistic

Ashwini_uci — Tue, 06 Mar 2012 00:00:44 GMT

Hello,

I am getting this note:

Note:

645 observations were deleted due to missing values for the response or explanatory variables.

after ruuning a proc logistic,

The code likes this:

proc logistic data =library.nismicathcabg4 descending ;

class female (ref= first) dm dmcx htn_c aids alcohol ANEMDEF arth race1(ref=first) ZIPINC_QRTL(ref=first) hosp_location h_contrl(ref=first) hosp_teach

bldloss chf chrnlung coag depress drug hypothy liver lymph lytes mets neuro obese para perivasc psych pulmcirc renlfail tumor

ulcer valve wghtloss cararrhythmia/param=ref;

model died= age female dm dmcx htn_c aids alcohol ANEMDEF arth race1 zipinc_qrtl hosp_location h_contrl hosp_teach TOTAL_DISC

bldloss chf chrnlung coag depress drug hypothy liver lymph lytes mets neuro obese para perivasc psych pulmcirc renlfail tumor

ulcer valve wghtloss cararrhythmia;

where pcionly=1 and stemi=0;

weight discwt;

title 'Logi Reg in-hosp mortality vs gender in POST-PCI MI patients using "where" option with RACE +income for nonstemi with pcionly';

run;

quit;

I have checked all the variables for missing values and deleted the records that had missing values for all above mentioned explanatory variables,so the data is supposed to be complete...

But i am not sure why i keep getting this note..

Any idea? any suggestions?

Thanks much.

Ashwini

Missing values note after running proc logistic

Rick_SAS — Tue, 06 Mar 2012 01:54:35 GMT

It's not just the explanatory variables, but any variables listed in the CLASS stmt, the MODEL stmt, or the WEIGHT statement. To count the number of missing values in your variables, see this article: http://blogs.sas.com/content/iml/2011/09/19/count-the-number-of-missing-values-for-each-variable/

topic Missing values note after running proc logistic in Statistical Procedures

Missing values note after running proc logistic

Missing values note after running proc logistic