!(CONDITION) works!?

[Henry Strawforrd]

After reading some posts here I was of the impression that negative conditions do not work.

use $data if !(var<16000), clear

works perfectly!

[Nick Cox]

!(var < 16000)

means

var >= 16000

which includes missing values!

[Henry Strawforrd]

Yes, in my case I had multiple nested conditions and couldn't get my head around how to rewrite them in positive form. So using the negative was easier