If you look at the original article

The Yale Preoperative Anxiety Scale: how does it compare with a "gold standard"?

Kain, Z N; Mayes, L C; Cicchetti, D V; Bagnall, A L; Finley, J D; Hofstadter, M B

Anesthesia and analgesia, ISSN 0003-2999, 10/1997, Volume 85, Issue 4, pp. 783 - 788

The mYPAS is on pp 787-788.

salam,

Could be useful.

I think looking at the Chapman UIniversity Difgitl Commosn

07-09-14 Development of a Short Version of the Modified yale Preoperative Anxiety Scale may be helpful to you.

It is in the Psychology faculty articles and research 07/09/2014

Good luck,

,SER