Selectively remove observations from data set

[Kbug]

Hello, I am new to SAS and am using SAS 9.4. I am trying to remove specific observations from a data set, in this case it is removing any rows that do not have 'inpatient' in the PAC variable. I have tried this code:

data final;
set draft1;
if PAC = 'inpatient' THEN OUTPUT;
if PAC ^= 'inpatient' THEN DELETE;
RUN;

But when I use this code no error shows up, and it goes through; However it just carries over all the data from draft1 without any changes. I would like to have any rows that do not have 'inpatient' in the PAC variable to be removed, what seems to be wrong with my code?

Below is the example data set:

DATA: Draft1

ID number          GENDER          PAC

12345                      M               inpatient

12345                      M              emergency

12345                      M              outpatient

24689                      F                inpatient

24689                      F                inpatient

24689                      F                emergency

56789                      M                inpatient

what I want is this:

DATA: Final

ID number          GENDER          PAC

12345                      M               inpatient

24689                      F                inpatient

24689                      F                inpatient

56789                      M               inpatient

[novinosrin]

all you need is

data final;
set draft1;
if PAC = 'inpatient' THEN OUTPUT;
RUN;

[Kbug]

I tried that and it still shows up as 0 observations. 
The notes say this:

NOTE: There were 2138 observations read from data set draft1.

NOTE: The data set final has 0 observations and 11 variables. 

so it is going through, but it isn't correct. 

[novinosrin · Accepted solution]

Try

if upcase(strip(PAC)) = 'INPATIENT' THEN OUTPUT;

[Kbug]

Thank you!