To compute confidence interval for median with SAS, we should use this program :
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If there is an assumption of normality
proc univariate data=DATA_SET ciquantnormal(alpha=.05);
var VARIABLE_OF_INTEREST;
run;
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If there is no assumption of normality :
proc univariate data=DATA_SET ciquantdf(alpha=.05);
var VARIABLE_OF_INTEREST;
run;
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But how to do it with SPSS ?
The RATIO STATISTICS command will compute a median with CI. E.g.,
http://www-01.ibm.com/support/docview.wss?uid=swg21476966
If you want the median with CI of a continuous variable use the following syntax:
COMPUTE testvariable=1.
EXECUTE.
RATIO STATISTICS testvariable WITH (NAME of Continuous variable)
/MISSING=EXCLUDE
/PRINT=CIN(95) MEDIAN.
I got the solution from IBM, it is very simple if you follow the process carefully.
http://www-01.ibm.com/support/docview.wss?uid=swg21476966
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