Table 2.

Pre- and Posttrial Clinical Measures (N = 32)

Measure	Pretrial, mean (SD)	Posttrial, mean (SD)
Positive and Negative Syndrome Scale
Positive scale	19.34 (4.26)**	16.41 (4.06)**
Negative scale	17.69 (3.64)	18.22 (3.29)
General psychopathology scale	40.88 (5.89)*	36.75 (5.38)*
Total score	77.59 (10.44)*	71.47 (9.89)*
Beliefs About Medicines Questionnaire
Necessity-concern differential	5.16 (5.78)	3.53 (5.75)
General total	21.28 (4.92)	21.44 (4.58)
Insomnia Severity Index	12.25 (6.34)	11.56 (8.13)
Beck Depression Inventory-2	19.69 (8.94)*	14.78 (10.28)*

*P < .01, **P < .001 (paired samples t tests).