Table 1.

p-Values for the interaction of site (Bulgaria vs. Turkey) by treatment (ACTIVE vs. SHAM). Duration of obsessive compulsive disorder (OCD) in years (y) and baseline Hamilton Depression Rating Scale 17 (HDRS-17) and Yale-Brown Obsessive Complusive Scale (Y-BOCS) scores for each site are listed. p-Values are from two-way analysis of variance (ANOVA). Bolded p-values were followed up with post hoc analysis.

Samples	Bulgaria	Turkey	ANOVA
Male (age ± SD)	7 (28 ± 12)	4 (28 ± 7)	p = 0.154 (for age, sex collapsed)
Female (age ± SD)	8 (38 ± 11)	3 (43 ± 16)	–
Duration of OCD (y ± SD)	7 ± 7	18 ± 12	p = 0.037
Baseline (Visit 1) HDRS-17	13 ± 1	12 ± 4	p = 0.104
Baseline (Visit 1) Y-BOCS	28 ± 5	28 ± 4	p = 0.847