In phase 2 , children in the WebTIPS group ( 36.2 14.1 ) were less anxious than children in the standard of care group ( 46.0 19.0 ) at entrance to the operating room ( P = 0.02 ; Cohen d = 0.59 ) and introduction of the anesthesia mask ( 43.5 21.7 vs 57.0 21.2 , respectively , P = 0.01 ; Cohen d = 0.63 ) .