calculated sum_cost*1) as discounted_cost format=dollar8.2 'Total cost after discount if any' from hospital_data group by id; quit; 9. The UNIQUE function This function is very convenient to show the number of the levels for every categorical variable. proc sql; select count(unique(...
Out of this, I want to create a separate data set with some existing variables and some new variables, that are produced out of an existing variable. This works pretty fine with this SAS code: proc sql; create table dataset_new as select id, year, count(distinct medication) as n_...
在PROC SQL查询中,若用户需要指定titles和footnotes,则须将TITLE和FOOTNOTE语句放在PROC SQL语句之前或者放在介于PROC SQL语句和SELECT语句之间。例如: 1procsql outobs=15;2title'Current Bonus Information';3title2 ‘EmployeewithSalaries>$75,000’;4selectempid label='Employee ID',5jobcode label='Job Code',...
In SAS, the easiest way to draw random sampling from data is to use PROC SURVEYSELECT or the SAMPLE function in SAS IML software. I have previously written about how to implement four common sampling schemes by using PROC SURVEYSELECT and the SAMPLE function. The DATA step in SAS is Read ...
While researching the topic of Latin hypercube sampling (LHS), I read an article by Emily Gao (2019) that shows how to use PROC IML in SAS to perform the algorithm. It is possible to simplify Gao's implementation of Latin hypercube sampling in SAS while also making the computation more ef...
In multiple logistic regression, a response variable can have several levels, such as low, medium and high, or 1, 2 and 3. Decision trees are classification models that partition data into subsets based on categories of input variables. This helps you understand someone's path of decisions. ...
SQLprocedureenablesyoutouseSQLwithintheSASsystem whichfollowstheguidelinessetbytheAmericanNational StandardsInstitute(ANSI). Inmanycases,theSQLprocedurereplacestheneedformultiple DATAandPROCstepswithonequery. Fudan_R_Module_0208103 Contents Overview ResearchModules:SQL ...
PROC DATASETS: The Swiss Army Knife of SAS® Procedures Paper 139-2010: Lafler, Kirk P. Exploring Powerful Features in PROC SQL Paper 140-2010: Jolley, Linda; Stroupe, Jane Dear Miss SASAnswers: A Guide to Sorting Your Data Paper 141-2010: Pass, Ray; Ewing, Daphne So You're Stil...
According to Simon, “Since implementing SAS, efficiencies afforded by analytics have reduced costs at the university by more than $1 million. Factor in the positive impacts on student success, and you’ve got a strong analytics culture where decision making generates wins on multiple fronts.” ...
第一种:set data1 data2;然后再执行proc sort。 第二种:set data1 data2;by variable;这种效率比第一种高,虽然不知道why...但是书上这么说的。我觉得可能是数据读取次数的问题吧,第二种只需要读一次,第一种要读两次 set语句从一个或多个sas数据集中读取观测值并实现纵向合并,每一个set语句执行时,sas就会...