Table 2.

Dissociation (Clinician Administered Dissociative Symptoms Scale) and Psychosis-Like Effects (Psychotomimetic States Inventory).

CADSS	Mean pre- (SD)	Mean peri- (SD)	Mean post- (SD)
Medical air	2.25 (4.09)	2.47 (4.31)	1.59 (3.52)
N2O	1.25 (3.48)	14.19 (15.34)	8.13 (10.67)
PSI
Medical air	16.44 (7.39)	16.97 (6.94)	14.56 (5.15)
N2O	12.34 (3.21)	22.34 (9.53)	19.16 (7.14)

Abbreviations: CADSS, Clinician Administered Dissociative Symptoms Scale; PSI, Psychotomimetic States Inventory.

Values are trimmed means (SD).