Table 1.

Results of t-tests and effect sizes comparing expectation (pre-trial) and satisfaction (post-trial) of the patients in the traditional group.

Statement	Pre-trial M (SD)	Post-trial M (SD)	t	p	d (95%CI)
(1) Treatment logic	7.95 (1.91)	8.43 (1.16)	1.19	0.248	0.25 (−0.19, 0.69)
(2) Treatment satisfaction	7.76 (2.00)	8.86 (1.42)	2.29	0.033	0.48 (0.02, 0.94)
(3) Recommending to others	7.95 (1.96)	8.90 (1.37)	2.42	0.025	0.51 (0.04, 0.98)
(4) Usefulness for other disorders	7.57 (2.38)	7.95 (1.53)	0.77	0.451	0.16 (−0.28, 0.60)
(5) Usefulness for the patient	8.19 (1.99)	8.71 (1.42)	1.02	0.321	0.21 (−0.23, 0.65)
(6) Unpleasantness∗	5.81 (3.33)	7.14 (2.63)	1.68	0.109	0.35 (−0.10, 0.92)
Total score	7.54 (1.67)	8.33 (1.24)	2.18	0.041	0.46 (0.00, 0.92)

M = mean. SD = standard deviation. t = t-test comparing the means for expectations (pre-trial) and satisfaction (post-trial); positive t-values indicated a larger mean in the post-trial than in the pre-trial. p = probability level associated to the t-test. d = standardized mean change effect size. 95%CI: 95% confidence limits for d. ^∗Item 6 is answered in reverse, and so it has been recoded to follow the same scoring criteria as the other five items on the scale.