About sasphd

sasphd · ‎09-03-2014

I want to delete the 44 first rows in sas database. I find how to delete a point ( delete point ), but I want to delete all rows from 1 to 44. Thanks

sasphd · ‎08-26-2014

I want to calculate the proportions of positive alphas. So the number in my column are (0,1) For example, A 1 0 1 0 so, the proportion of positive alphas is equal to sum of A /number of observations(which is 4 here)=2/4

sasphd · ‎08-26-2014

where is the output?

sasphd · ‎08-26-2014

I want to sum the observations of a column. A 1 2 6 3 = Total 12

sasphd · ‎08-21-2014

I use proc model to estimate a model such that alpha=a + b x moments are: eq.one=m *R-1- alpha; eq.two=m*R*Z-Z-alpha; I want to estimate parameters a and b. but the results is biased. I find in SAS help that biased results are due to the model equation. it is such that there is linear dependency that causes biased results and inflated variances Can someone help me?

sasphd · ‎08-19-2014

Hello, I want to joint some tables. table 1 A B C 1 2 5 2 9 6 5 5 6 table2 A B C 8 9 9 5 6 3 2 1 3 JOINT TABLE THAT I WANT A B C 1 2 5 2 9 6 5 5 6 8 9 9 5 6 3 2 1 3

sasphd · ‎08-18-2014

Hello, I am running a large database on sas in batch. SAS generates two files: .LOG file is the log for the program that has been executed and .LST file is the output file for the program that has been executed. the .LST file is too big. How can I do to do not generate it?

sasphd · ‎08-18-2014

MEMSIZE=2147483648 Specifies the limit on the total amount of memory to be used by the SAS System My problem is not to generate the bootstrap samples but with my main program running on the bootstrap samples.

sasphd · ‎08-15-2014

Hello, I am running bootstrap simulations. My program works for few data when I make a test. But, when I perform the whole database, SAS keep running and after some time, he notice that memories is insufficient. Can someone help me?

sasphd · ‎07-31-2014

Can you please tell me how can I include this in my bootstrap. In place of having numobs=81 (constant), I will make my program count the number of observations for each id and generate 1000 bootstrap samples for each id. In the example, I suppose that I have id=1 and I find 81 observations. So, by doing the bootstrap I will have totaly 81000 because I need the sample to be of the same size as the original data.

sasphd · ‎07-30-2014

Thanks Yes I know that. I tried it with proc surveyselect and it works with method=urs. I Wants to do it this way to check something. data base_orig; set man.nv_bd_fonds_individuels10i; orig_seq_obsid + 1; by crsp_fundno; if first.crsp_fundno then orig_seq_obsid = 1; run; * Generate 1000 bootstrap samples of random patient IDs; %let numsamp=1000; %let numobs=81; data temp04; do bootsamp=1 to &numsamp; do bootsamp_obsid=1 to &numobs; random_seq_obsid=ceil(&numobs*ranuni(1)); output; end; end; run;

sasphd · ‎07-30-2014

Hello, Here is my program. As you can see I do a random sample with replacement. I need the sample to be of the same size as the original data. Here I know that the size is equal to 81, so I fixed it. But I want that my program count the number of obsevations automatically. I find that I can use the nbos but I do not know how? %let numsamp=1000; %let numobs=81; data temp04; do bootsamp=1 to &numsamp; do bootsamp_obsid=1 to &numobs; random_seq_obsid=ceil(&numobs*ranuni(1)); output; end; end; run;

sasphd · ‎03-04-2014

Thanks it works with my macro but it takes a lot of time. Can you tell me how to do it with %ANALYZE macro and %BYSTMT macro. 24982 - Jackknife and Bootstrap Analyses

sasphd · ‎03-04-2014

When I am using only group, I am running my proc model using a macro with a do loop by group to estimate my variable. In the output, I have my estimate for each group. Here I create a N bootstrap sample for each group. My question is how we can run proc model for each bootstrap sample by group?

sasphd · ‎03-04-2014

Hello, I want to do bootstrap simulation. I create N bootstrap sample for each group. the dataset looks like: Group bootstrapsample 1 1 1 1 1 2 1 2 1 3 1 3 . . 1 N 2 1 2 1 2 2 2 2 2 3 2 3 . . 2 N I want to use %BYSTMT macro to run my program for each bootstrap sample for each group? Thanks

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