Dear
Please suggest me in my pgm how to calculate stratified p_value. The stratification factors are (age ss ph). Thank you
data one;
input trt res$ age ss ph $;
datalines;
1 cr 55 1 Y
1 cr 53 1 N
1 cri 52 1 Y
1 cri 58 1 N
1 cri 50 2 N
1 cr 53 2 N
1 cri 52 2 Y
1 cri 58 2 N
2 cri 56 2 Y
2 cri 51 2 N
2 cr 50 2 Y
2 cr 56 2 N
;
proc freq data = one;
table age*ss*ph*trt*res/ alpha = 0.05 chisq pdiff cl nocol nopercent ;
exact chisq / alpha = 0.05 ;
ods output chisq = exact (where = (upcase(statistic) = 'CHI-SQUARE')) ;
output out = pval(rename = (p_pchi = pval)) pchi ;
run ;
Are you requesting stratification by Age (only) SS (only) and PH (only) for the TRT*RES? If so perhaps
proc freq data = one; table (age ss ph)*trt*res/ alpha = 0.05 chisq pdiff cl nocol nopercent ; exact chisq / alpha = 0.05 ; ods output chisq = exact (where = (upcase(statistic) = 'CHI-SQUARE')) ; output out = pval(rename = (p_pchi = pval)) pchi ; run ;
You can group variables by role in Proc Freq table statements with ( )
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.