how can u create zero observation dataset?

11 Answers   CitiGroup,

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how does sas handle missing values in a merge? : Sas programming

0 Answers  

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The below code we are using for creating more than one macro variables in proc sql using into clause. How we can use same code to create macro variables vara, varb, varc instead of var1, var2, var3.? proc sql noprint; select count(distinct(patient)) into :var1 - :var3 from dataset1 group by trtreg1c ; quit;

1 Answers   Accenture,

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What is the work of tranwrd function?

0 Answers  

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what is the difference between informat$8. $char8.

3 Answers   SAS,

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What is interleaving in SAS?

0 Answers  

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What makes sas stand out to be the best over other data analytics tools?

0 Answers  

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I need help in merging two different datasets. I am merging by date and I want to propagate observations from one dataset to the corresponding dates. One dataset has a unique date for each day of the month, while the other dataset has same date for different patient visits. For example I want to spread an observation on the 31DEC2008 from one dataset to several observations with the same date on a second dataset for all the patients who visited on that date. I have tried to merge the two and the result is not what I wanted. Instead I get a dataset whereby all the dates have missing values where observations from the first datset should have spread.

1 Answers  

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wt is a-z and a--z?

3 Answers   Accenture,

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/* This is example of age caluculate wihtout to display perfect days and years in output window */ data age; retain dob "12jun2003"d now "24may2011"d; age1=now-dob; age=(now-dob)/365.25; years=int(age); days1=round((age-years)*365.25); months=month(now)-1; if days1 gt 30 and months in(12,10,8,6,4,2)then do; month1=days1/30.4375; month=int(days1/30.4375); if day(now)=1 then days=1; else days=round((month1-month)*30.4375)+1; drop days1 month1 month; end; else if days1 gt 30 and months in (1,3,5,7,9,11)then do; month1=days1/30.4375; month=int(days1/30.4375); if day(now)=1 then days=1; else days=round((month1-month) *30.4375); drop days1 month1 month; end; drop age age1; proc print data=age; format dob now date.; run;

1 Answers   Emerio,

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describe the interaction table in sas di? : Sas-di

0 Answers  

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How are numeric and character missing values represented internally?

0 Answers   Quintiles,

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