Help with IF THEN statements - when you have more observations!

[sharuu_00]

Hi,

 I have 2 sas datasets:

Var_1 = Visits        Var_2 = Types

          1                          x1, x1, ....x1x2, x1x2

           2

            3

      .....

...... 49, 50

its like, I have visits 1- 50 and Types x1 and x1x2

So, If visits 1- 16 then Its x1 type

       and if visits 17-50 then its x1x2 type

so, I need to create a dataset which says,

If  visits 1-16 and x1 then  D= Finish

if visits  0  then D = Not Finish

and

If visits 17-50 then its D2 = Finish

If visits 0 hten its D2 = Not Finish

Thanks,

[Reeza]

Here's a few ways to check conditions that can help you get started. 

If you're checking for a range use

if  1 <= Var_1 <= 17 and VAr_2 in ('X1' 'X2') then D='Finish';

If you're checking integers you can also use the following: where 1:17 is 1 to 17 inclusive, but integers only. 

if var_1 in (1:17) and var_2 in ('X1', 'X2') then D1 = 'Finish';
else if var_1 in (18:50) and var_2 not in ('X1' 'X2') then D1 ='Started';
else D1 = 'Not Finished';

Note the IN as well to check multiple values at once, that can be for character or numeric values.

Not really sure what you mean about 'more observations', you need to clarify that. 

In general, I think this gives you the tools to answer your question. 

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@sharuu_00 wrote:

Hi,

 I have 2 sas datasets:

Var_1 = Visits        Var_2 = Types

          1                          x1, x1, ....x1x2, x1x2

           2

            3

      .....

...... 49, 50

its like, I have visits 1- 50 and Types x1 and x1x2

So, If visits 1- 16 then Its x1 type

       and if visits 17-50 then its x1x2 type

so, I need to create a dataset which says,

If  visits 1-16 and x1 then  D= Finish

if visits  0  then D = Not Finish

and

If visits 17-50 then its D2 = Finish

If visits 0 hten its D2 = Not Finish

Thanks,

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