how to exclude missing values in where statement

[Jannie_D]

I am creating sub populations and in that proces I encountered a problem. because I use th symbol < in a where statement it includes all missing values too (for dato_diagnose). How can I get around that? 

the code is

data POP4_01;

set All1;

where not missing(koloskopi1_dt) and Dato_diagnose<182+LabSvar;

run;

[PaigeMiller · Accepted solution]

where not missing(koloskopi1_dt) and not missing(dato_diagnose) and  Dato_diagnose<182+LabSvar;