data task; input id date date9. visit; cards; 101 01jan2015 1 101 02jan2015 2 101 06jan2015 3 102 04jan2015 1 102 07jan2015 2 102 12jan2015 3 103 06jan2015 1 103 13jan2015 2 ; run; write a program to find out missing dates between visits by each subject.

1 Answers  

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what is SAS OPTIMIZATION?

0 Answers  

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Can we create datasets by proc step ? (Proc contents, Means)?

2 Answers  

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How do you download a flat file from Mainframe to your local PC using SAS?

3 Answers  

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For clinical entire study how many tables will create approx?

0 Answers   TCS,

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What is the purpose of _error_?

1 Answers   Quintiles,

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How do you debug and test your SAS programs? What can you learn from the SAS log when debugging? How do you test for missing values? How would you create multiple observations from a single observation? What are some good SAS programming practices for processing very large data sets? Briefly describe 5 ways to do a "table lookup" in SAS. Why is SAS considered self-documenting? Are you sensitive to code walk-throughs, peer review, or QC review? What other SAS features do you use for error trapping and data validation? How does SAS handle missing values in: assignment statements, functions, a merge, an update, sort order, formats, PROCs?

2 Answers  

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diff between nodup rec and ondup key???

3 Answers   AON, Sciformix,

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what is validvarname and varnum? why we are using this options; explain with a syntax for this options?

1 Answers   Max India,

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Hi, I have one dataset, could you please ans for this. id amount paid_amount 1 700 400 2 900 250 3 300 300 a 400 250 b 500 320 c 800 650 x 200 190 y 900 250 z 300 180 i want create new dataset having id and paid_amount who are paid high amount comparing amount. ex: 1d paid_amount 3 300 c 650 x 190

3 Answers  

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How would you identify a macro variable? : sas-macro

0 Answers  

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What is instream data in SAS?

1 Answers  

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